Apr

27

 It's a wrestling match today with bonds up a half from 7 down days and a 2 month low, and crude at a 4 month high, up another 2%. It is interesting to note that somehow the Fed believes that moves in oil are ephemeral and have no effect on inflation.

anonymous writes:

Here is a paper presented by Vineer Bhansali at JOIM : "Beyond the Quant Model" [36 page pdf]

I got a lot out of it even when I couldn't follow the physics examples.

Alex Castaldo replies:

I see that in late December 2015 Vineer Bhansali left Pimco to start his own firm LongTail Alpha:

LongTail Alpha is named after its strategy that "sustained portfolio performance comes from expecting the unexpected, and positioning portfolios to earn yield while maintaining convexity," according to a statement he issued. Bhansali said he is initially funding the firm himself. He earned a Ph.D. in theoretical physics from Harvard University in 1992 after receiving bachelor's and master's degrees in physics at the California Institute of Technology. He […] worked at Pimco for 16 years.

It would seem he is a convex combination of The Professor, The Upside Down Man and the Derivatives Expert. 

The talk is billed as a light talk rather than a technical one. He discusses lessons learned from hobbies and other fun activities and summarizes them in 10 points:

1.  Focus on Structure (and on the one idea that supports the structure)

2.  Let the data speak (and be Bayesian when you listen to it)

3.  Use proper coordinates and units

4.  Know the types of errors (and correct for them)

5.  Simplify

6.  Look for scaling rules (and anticipate the possibility of sharp/sudden transitions)

7.  Simulate freely (especially if you suspect path dependence) and use Gedanken (thought) experiments

8.  Identify tradeoffs (and deal with imbalance by owning free or cheap options)

9.  Don’t fight momentum (look for it and ride it)

10. Pay heed to the environment (and be flexible in adjusting to it)


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2 Comments so far

  1. Barman on April 28, 2016 8:43 am

    The Western States 100 references got my attention - used to go run that almost every year during the ’80s.

  2. anand on April 28, 2016 10:29 am

    Id be interested to hear what the chair or anyone else thinks of his thoughts on momentum in part (9)?

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