Sunday, October 21, 2012

"Woeful Wails" - My Dad's account of what happened in 1989 at Srinagar, Kashmir

A Shiver, a shudder goes down my spine
To have lost what once was mine
The merciless devils who strode the streets
With guns pointing at us, to stop our beats
Butchers, killers and hardened marauders
Our houses and deities besieged by intruders

Pasted bills on our doors and blared sirens
Threatening us of snuffing our lives
Roaming with evil eyes and sinister designs
Of looting, killing and maiming us
Wresting our women for their lust

O God it was sheer mayhem all around
A valley with suffering and death abound
We left our homes and our native soil
Shocked and traumatized to face the toil
Our riches, comforts and dwellings gone
Young ones crying, no one to look upon
The blistering heat and hot summers
As if got thrown in hot cinders

Snakes around and in makeshift tents
Found our breaths to face the torments
O God what a cauldron of agony?
Stuffed in cramped spaces with so many
Confused, witless did we wander
Tried our hard but failed to ponder
O Lord our supreme you know our woes
How we braced-up and stood on our toes

I bow to Him for all his piety
What if we lost the prime of life?
Our children indeed did us a pride
Thanks to thee O Lord we are alive
Bless us now and return us our smile

                                                         Jan 2010, San Diego CA.

Also published at a leading Indo-US magazine in USA Here

Saturday, June 16, 2012

What does it mean to be Long Vega?

The long call and the long put have positive Vega (are long volatility) and the short call and short put positions have a negative Vega (are short volatility).

The terms long and short here refer to the same relationship pattern when speaking of being long or short a stock or an option. That is, if volatility rises and you are short volatility, you will experience losses, and if volatility falls, you will have immediate unrealized gains. Likewise, if you are long volatility when implied volatility rises, you will experience unrealized gains, while if it falls, losses will be the result.

When you own a call or a put (meaning you bought the option) and volatility declines, the price of the option will decline. This is clearly not beneficial and results in a loss for long calls and puts. On the other hand, short call and short put traders would experience a gain from the decline in volatility. 

Volatility will have an immediate impact, and the size of the price decline or gains will depend on the size of Vega. So far we have only spoken of the sign (negative or positive), but the magnitude of Vega will determine the amount of gain and loss. 

Here is a wonderful article below are the highlights from this article.

Wednesday, May 11, 2011

Some basics on Bond Investing

A bond is a loan that an investor makes to a corporation, government, federal agency or other organization. These loans in turn are used by the pubic and private sectors to do all sorts of things - build roads, improve schools, open new factories and buy the latest technology.


Since bond issuers know you aren't going to lend your hard-earned money without compensation, the issuer of the bond (the borrower) enters into a legal agreement to pay you (the bondholder) interest.



When you invest in an individual bond and hold it to "maturity," you won't lose your principal unless the bond issuer defaults. When you invest in a bond fund, however, the value of your investment fluctuates daily - your principal is at risk.


The bond issuer also agrees to repay you the original sum loaned at the bond's maturity date. A bond's maturity usually is set when it is issued. At maturity borrower fulfills its debt obligation when the bond reaches its maturity date, and the final interest payment and the original sum you loaned (the principal) are paid to you. Bonds often are referred to as being short-, medium- or long-term. 


Important : Not all bonds reach maturity. Callable bonds are common: They allow the issuer to retire a bond before it matures. Call provisions are outlined in the bond's prospectus. Before you buy a bond, always check to see if the bond has a call provision, and consider how that might impact your portfolio investment.


Bond Coupons

A bond's coupon is the annual interest rate paid on the issuer's borrowed money, generally paid out semi-annually on individual bonds. The coupon is always tied to a bond's face or par value and is quoted as a percentage of par.

Say you invest $5,000 in a six-year bond paying a coupon rate of five percent per year, semi-annually. Assuming you hold the bond to maturity, you will receive 12 coupon payments of $125 each, or a total of $1,500.

Accrued interest is the interest that adds up (accrues) each day between coupon payments. If you sell a bond before it matures or buy a bond in the secondary market, you most likely will catch the bond between coupon payment dates. If you're selling, you're entitled to the price of the bond plus the accrued interest that the bond has earned up to the sale date. The buyer compensates you for this portion of the coupon interest, which generally is handled by adding the amount to the contract price of the bond.

Bonds that don't make regular interest payments are called zero-coupon bonds - zeros, for short. As the name suggests, these are bonds that pay no coupon or interest. Instead of getting an interest payment, you buy the bond at a discount from the face value of the bond, and you are paid the face amount when the bond matures. For example, you might pay $3,500 to purchase a 20-year zero-coupon bond with a face value of $10,000.

Bond Yield

Yield is a general term that relates to the return on the capital you invest in a bond. You hear the word "yield" often with respect to bond investing. There are, in fact, a number of types of yield. The terms are important to understand because they are used to compare one bond with another to find out which is the better investment.

Coupon yield is the annual interest rate established when the bond is issued. It's the same as the coupon rate and is the amount of income you collect on a bond, expressed as a percentage of your original investment. If you buy a bond for $1,000 and receive $45 in annual interest payments, your coupon yield is 4.5 percent. This amount is figured as a percentage of the bond's par value and will not change during the lifespan of the bond.

Current yield is the bond's coupon yield divided by its market price. To calculate the current yield for a bond with a coupon yield of 4.5 percent trading at 103 ($1,030), divide 4.5 by 103 and multiply the total by 100. You get a current yield of 4.37 percent.

Say you check the bond's price later and it's trading at 101 ($1,010). The current yield has changed. Divide 4.5 by the new price, 101. Then multiply the total by 100. You get a new current yield of 4.46 percent.

Note: Price and yield are inversely related. As the price of a bond goes up, its yield goes down, and vice versa.

If you buy a new bond at par and hold it to maturity, your current yield when the bond matures will be the same as the coupon yield.

Yield-to-Maturity (YTM) is the rate of return you receive if you hold a bond to maturity and reinvest all the interest payments at the YTM rate. It is calculated by taking into account the total amount of interest you will receive over time, your purchase price (the amount of capital you invested), the face amount (or amount you will be paid when the issuer redeems the bond), the time between interest payments and the time remaining until the bond matures.

Yield-to-Call (YTC) is figured the same way as YTM, except instead of plugging in the number of months until a bond matures, you use a call date and the bond's call price. This calculation takes into account the impact on a bond's yield if it is called prior to maturity and should be performed using the first date on which the issuer could call the bond.

Yield-to-Worst (YTW) is the lower of a bond's YTM and YTC. If you want to know the most conservative potential return a bond can give you - and you should know it for every callable security - then perform this comparison.

Monday, July 19, 2010

Chips Ahoy!!

In Aug 2007 LSI Logic Corp. announced it would sell off its mobility products business unit to Infineon Technologies AG, and in September of the same year the number of baseband suppliers was further reduced when MediaTek Inc. purchased Analog Devices Inc.'s baseband chip product line.

Infineon now has the main stake in this business with 25% of the revenues coming from it.

In the rankings in the baseband market the main players were QCOM, MediaTek, Texas Instruments, STMicroelectronics, Infineon Technologies, Broadcom, Renesas, Marvell Technology Group and Spreadtrum Communications, according to iSuppli.

Friday, July 16, 2010

Data Visualization Tools

1) Ruby -- for data munging;
2) Postgres -- for database management;
3) World Programming System (WPS) -- for SAS legacy data programming;
4) Tibco -- for data visualization;
5) R -- for predictive modeling/data mining.

The developing interface between Tibco and R is very promising. 


WEKA

Wednesday, June 23, 2010

QCOM Snapdragon

The Qualcomm Snapdragon platform continues to generate robust industry attention to accompany its steadily expanding customer base. The Snapdragon platform is already incorporated into over 140 device designs that include mobile devices that range from HTC's Droid Incredible and Nexus One smartphones to Huawei's S7 tablet to name a few. 

The Snapdragon platform can be viewed as competing within the mobile application processor market segment (also referred to as the mobile multimedia processor market segment). Today the mobile application processor segment includes integrated circuit platforms that typically integrate the application processor core along with additional functions such as baseband modem and wireless connectivity functions onto a single system-on-a-chip; this includes the Qualcomm Snapdragon. 

The mobile application processor market also consists of IC platforms that exclude integration of baseband modems (e.g., Texas Instrument's OMAP 4). The mobile application processor platform segment addresses a wide range of mobile devices including smartphones, mobile Internet devices, netbooks and portable media devices. By its nature, the mobile application processor market segment attracts a wide swath of competition from the top-tier mobile silicon players, including Samsung, Apple, Intel and TI. 

Due to Qualcomm's historically solid competitive foundation, based heavily on its CDMA chipset royalties, and the burgeoning traction of the Snapdragon platform (in over 140 device designs), it presents a mounting competitive challenge and thus generates the key issue of how the competition can position against the overall Snapdragon platform. At the recent COMPUTEX 2010 show, Qualcomm unveiled the sampling of the third generation of its Snapdragon platform – namely its first dual-CPU Snapdragon chipsets consisting of the MSM8260, MSM8660 and QSD8672 products that feature enhanced dual cores that can run at up to 1.2 GHz and 1.5 GHz respectively, and are targeted at the high-end smartphone market area (the third generation Snapdragon platform is expected to support commercial products by the end of 2010). The new third-generation Snapdragon products complement its first-generation QSD8x50 1GHz core product and the second-generation MSM8x55 and QSD8x50A products with 1 GHz enhanced core, including multimedia optimizations and 1.3 GHz enhanced core respectively.

The Snapdragon platform has been commercially available since Q4 2008 through the QSD8650 and QSD8250 first generation product offerings. From its inception, Qualcomm positioned the Snapdragon platform as an innovative breakthrough offering since it uses the in-house custom developed Scorpion CPU as the core application processor based on the ARMv7-based Cortex-A8 core. This approach has enabled Qualcomm to engineer improvements over standard off-the-shelf ARMv7-based Cortex-A8 processors in areas such as power consumption (e.g., the first Scorpion processor required 150 milliwatts less power consumption at 600 MHz than the non-customized ARM equivalent and so on) as well as optimizing the processor design for the low-power process. As a result, the Snapdragon platform has proven a stalwart in the smartphone and tablet application processor market, as evidenced by the Snapdragon platform's multiple high-profile mobile device OEM selections. 

For the first generation Snapdragon QSD82x0 products and the second generation Snapdragon MSM8x55 and QSD8x50A products, Qualcomm shares platform and product metrics in areas such as core processor clock speed/performance, flexible wireless connectivity functions, HD video/3D/display/camera support and operating system versatility. This gives rivals a wide range of product areas to seek selective differentiation against the Qualcomm Snapdragon platform, although Qualcomm is hardly unique in that regard. 

The topic of core processor clock speed and performance, for example, represents a straightforward and intuitive product area for rivals to assert competitive differentiation. The Snapdragon platform's first-generation QSD8x50 supports a 1 GHz core processor while the second-generation MSM8x55 and QSD8x50A products support a 1 GHz enhanced core, including multimedia optimizations and a 1.3 GHz enhanced core respectively. 

In contrast, Intel asserts that its x86 processor-based Moorestown platform via the Atom Z6xx processor series can support up to 1.5 GHz clock speed for smartphone devices and up to 1.9 GHz clock speed for tablet devices. Such metrics will still match the third generation Snapdragon QSD8672 product that is designed to run dual cores that operate at 1.5 GHz (this product should appear in mobile devices at retail by the end of 2010). This complements Intel's overall efforts to position its Moorestown platform as prime time ready for smartphone technology due to the improvements realized in areas such as power consumption advances in battery life spans (based on 1500 mAh batteries) in support of 1080p/720p video (e..g, up to four hours for 1080p video) and browsing applications as well as multi-fold improvements gained in Java script, Web page, graphics and video performance. This includes up to fourfold Java script performance improvement and at least a doubling of Web page download performance and graphic performance in relation to the Qualcomm Snapdragon platform as well as wielding the industry's only across-the-board support of 1080 HP/MP/BP 30 fps and 720 HP/MP/BP 30 fps video capabilities. 

Intel's overall R&D investment and marketing blitz on behalf of the Moorestown platform is certainly targeted at Snapdragon, as well as advancing Intel's longstanding ambition to promote the x86 processor architecture as a viable alternative to the ARM processor architecture that dominates the mobile device silicon market today. Intel hopes to play a more prominent role within the overall mobile device silicon market beyond netbook silicon. There is a bit of irony here as Intel is looking to use the Intel Moorestown platform to attack the ARM-centric Snapdragon platform in Qualcomm's backyard of smartphone and tablet silicon, while Qualcomm is developing the Snapdragon platform to help more directly challenge Intel's prominence within the netbook silicon segment.

Apple, Samsung and TI are Qualcomm rivals that also use the customization of the ARMv7-based Cortex-A8 processor to achieve select advancements over the standard ARM offering. Samsung and Apple currently have a strange bedfellow arrangement that can influence how they position their respective platforms against the Snapdragon platform. Samsung collaborated with Intrinsity in developing and introducing its 45nm-based Hummingbird platform during 2009. In April 2010, it was revealed that Apple acquired Intrinsity in stealth mode to lock up the FastCore intellectual property that was instrumental in realizing the iPad A4 processor's enhancements to standard issue ARM Cortex-8 core processor technology (e.g., achieving 1 Ghz clock speed on a 45nm process). 

Through the acquisition, Apple can promote that its A4 processor development efforts are dedicated exclusively to the support of Apple products such as the iPad and iPhone, and the company can avoid the dissipation of processor engineering resources that its rivals, such as Qualcomm, are obliged to perform through the open-ended support of multiple OEM products. 

Samsung should look to further elucidate its plans to license the Hummingbird technology to other mobile device vendors and what if any impact this has on its Apple relationship. The Apple acquisition of Intrinsity does not change the fact that Apple's A4 technology remains based on Samsung's 45nm SoC technology and Samsung continues to have access and wield the Hummingbird IP gained from its joint collaboration with Intrinsity prior to the Apple acquisition of Intrinsity.

Samsung continues to register significant product development and marketing advances with its Hummingbird SC5PC110 processor. The Hummingbird S5PC110 runs the Samsung Galaxy S smartphone, which Samsung asserts will launch in an astonishing 110 countries. One area the Samsung can assert clear product differentiation against Qualcomm is in the area of 3D graphics. The S5PC110 processor can scale up to support 90 million triangles per second. In contrast, the Qualcomm QSD8650 delivers only 22 million triangles per second while the pending QSD8672 will do up to 80 million triangles per second. Additionally, in the related area of 2D graphics rendering, Samsung's S5PC110 product can support up to one billion pixels per second while Qualcomm's QSD8650 supports only 133 million pixels per second and the upcoming QSD8672 product still comes up short against Samsung with an improved 500 million pixels per second. 

TI's OMAP 4 platform using the OMAP4440 processor is slated to support mobile device products that will hit retail in late 2010/early 2011. The OMAP processor series is already found in well-known mobile handset products such as the Nokia N-series, the Motorola Droid, and the Palm Pre. However, OMAP 4 dual core clock speeds are limited to just 1 GHz, and that's for a product that is not yet in generally available mobile products. In this regard, OMAP 4 only ties the Qualcomm Snapdragon's first generation 1 GHz product and trails both the second and third generation 1.2 GHz/1.5GHz products. 

However, TI has already staked out a competitive position against Qualcomm in this area showing how apples-to-apples comparisons can prove dicey at times in the mobile silicon space. TI asserts that the OMAP 4 can deliver improved resolution display and still image metrics in relation to the Snapdragon platform, despite the core processor clock speed differentials. For example, the OMAP 4 can deliver 20-megapixel camera support while the QSD8x50 product can only handle 12-megapixel cameras. Moreover, TI advocates the OMAP 4 platform will prove more flexible in hardware support of future video codecs in relation to the Snapdragon platform. TI will also invoke that its OMAP4440 processor will use the ARM Cortex-9 architecture, which can yield performance improvements over ARM Cortex-A8 products (up to 30% according to ARM) and more flexible dual core power management arrangements.

Overall the most serious long-term competitive threats to the Qualcomm Snapdragon platform within the smartphone and tablet application processor market will prove to be the major mobile silicon players such as Samsung, Apple and TI, as well as Intel, who already possess competitive application processor platforms targeted specifically at smartphone, MID and tablet products. Mobile silicon rivals such as Marvell, Freescale, Nvidia and ST-Ericsson all sport viable mobile application processor platforms but need to prove they can move the market needle more within the mobile application processor market segment to mount a serious challenge to Qualcomm in the evolving smartphone/tablet silicon market segment. Marvell and Freescale have achieved market distinction within the eReader niche, for example, but are not able to match the Snapdragon's presence in over 140 device design wins. 

Samsung, Apple, Intel and TI all possess the product differentiators in areas such as core processor clock speed/performance, power consumption metrics, and HD video/3D/display/camera video performance and the global channels to challenge the Snapdragon's early market prominence in this area into the foreseeable future.

Ron Westfall is the Research Director of Silicon at Current Analysis and is responsible for tracking the evolution and the competitive landscape within the global chipset market, including mobile device chipsets. Westfall brings over twelve years of analytical experience to the overall telecommunications and silicon market, including specialization in mobile silicon, regulatory issues, and telecom infrastructure technologies. Contact Westfall at rwestfall@currentanalysis.com or follow him on Twitter @sirronsilicon.

"Woeful Wails" - My Dad's account of what happened in 1989 at Srinagar, Kashmir

A Shiver, a shudder goes down my spine To have lost what once was mine The merciless devils who strode the streets With guns pointing at u...