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by Alan
Yesterday, 2:05 pm
Forum: Politics Forum
Topic: Trump -- the last 100 days
Replies: 3606
Views: 193699

Re: Trump -- the last 100 days

You mispronounced Kamala. 

According to the internet ...
The failure to correctly pronounce Harris’ name — especially among those whose jobs it is to know — is just a racist dog whistle being used to belittle Harris, who is Black and Indian-American.
by Alan
August 9th, 2020, 7:11 pm
Forum: Politics Forum
Topic: Trump -- the last 100 days
Replies: 3606
Views: 193699

Re: Trump -- the last 100 days

Pelosi to Court: "Sure, your honor, we'd like to see the unemployed get an extra $400/wk, but not if it creates CHAOS. Let them eat cake while Congress proceeds in its usual deliberative manner". To be fair, Pelosi hasn't said that she will sue. Maybe nobody will, as I said -- at least on the unempl...
by Alan
August 9th, 2020, 2:22 pm
Forum: Politics Forum
Topic: Trump -- the last 100 days
Replies: 3606
Views: 193699

Re: Trump -- the last 100 days

I applaud Trump's executive orders on the 2nd round of coronavirus relief. Some of them might be illegal, but who's going to sue on the $300/wk (+$100 requested from the states) supplemental jobless benefit? If it goes to the Supremes, they could just defer a potential 'illegal' ruling (on that part...
by Alan
August 8th, 2020, 2:09 pm
Forum: Student Forum
Topic: sensitivity of american digital (binary) options to changes in volatility skew
Replies: 14
Views: 621

Re: sensitivity of american digital (binary) options to changes in volatility skew

In the end you are working with (tree) approximations to diffusions, since every local vol model is a diffusion. Since there are OT bounds for all diffusions, you might learn more general truths (about diffusions) by exploring the sensitivity of those bounds to changes.  Just don't expect the market...
by Alan
August 7th, 2020, 5:08 pm
Forum: Student Forum
Topic: Silly questions
Replies: 109
Views: 28669

Re: Silly questions

Can you show it `works in practice" in an example?
by Alan
August 6th, 2020, 7:33 pm
Forum: General Forum
Topic: Asset Allocation Models in Hedge Funds/Asset Management Firms
Replies: 5
Views: 267

Re: Asset Allocation Models in Hedge Funds/Asset Management Firms

Ad hoc:
Staffer to Carl Icahn: "Hey, boss, I hear Bill Ackman's hedge fund is taking a massive short position in Herbalife"
Icahn: "I hate that guy. Let's take a massive long position and burn his ass".   :D
by Alan
August 6th, 2020, 5:28 pm
Forum: General Forum
Topic: Asset Allocation Models in Hedge Funds/Asset Management Firms
Replies: 5
Views: 267

Re: Asset Allocation Models in Hedge Funds/Asset Management Firms

The two most popular models are probably "ad hoc" and "quasi-index". For the first, watch the tv show "Billions". 
by Alan
August 4th, 2020, 3:20 pm
Forum: Politics Forum
Topic: Trump -- the last 100 days
Replies: 3606
Views: 193699

Re: Trump -- the last 100 days

My new hero! (HB guy, next city up the coast from me)
by Alan
August 4th, 2020, 3:00 pm
Forum: Student Forum
Topic: sensitivity of american digital (binary) options to changes in volatility skew
Replies: 14
Views: 621

Re: sensitivity of american digital (binary) options to changes in volatility skew

Yes, I think of it similarly: competition between a vol effect (spreading out the density), and a negative drift effect (pulling the particle away from an upper barrier).  BTW, Paul Glasserman's Monte Carlo book has some discussion of Brownian bridges for improving barrier hit detection in general 1...
by Alan
August 3rd, 2020, 8:08 pm
Forum: Politics Forum
Topic: Trump -- the last 100 days
Replies: 3606
Views: 193699

Re: Trump -- the last 100 days

Hmmm ... seems a bit like a shakedown:  Trump Says U.S. Should Get Slice of TikTok Sale Price By Trump's logic, since virtually every acquisition seems to require some kind of regulatory sign-off by the Feds, I guess they could ask for a slice of every deal!  Well, better that than a new transaction...
by Alan
August 2nd, 2020, 4:52 pm
Forum: Student Forum
Topic: Student completely new to the quantitative finances world
Replies: 2
Views: 190

Re: Student completely new to the quantitative finances world

welcome -- three suggestions. 1. On books, start with this short, cheap, excellent intro book by  Richard Brealey . 2. On the economy, start regularly reading the business section of your favorite local major newspaper, plus the Wall Street Journal (perhaps available for free in your school library)...
by Alan
August 2nd, 2020, 4:19 pm
Forum: Off Topic
Topic: News from Outer Space
Replies: 1204
Views: 144509

Re: News from Outer Space

SpaceX return from ISS in a couple hours (on cspan in US).
by Alan
August 2nd, 2020, 3:12 pm
Forum: Off Topic
Topic: What Watch do You Wear?
Replies: 174
Views: 42512

Re: What Watch do You Wear?

That's so surreal. If my husband had a mistress, they would be both wearing concrete galoshes.
Sounds very Calabrian.
The better version for anybody with a beloved pet: Your cat and a stranger are both drowning, but you can only save one. Which one do you save?
by Alan
August 2nd, 2020, 2:56 pm
Forum: Student Forum
Topic: Silly questions
Replies: 109
Views: 28669

Re: Silly questions

I may be missing something, but since the time-step [$]\Delta t[$] is small, I would just do the usual simplest possible Monte Carlo for the 'random part':  At each step, draw a std-normally distributed n-vector [$]\vec{Z}[$] and take [$]\vec{x}_{t + \Delta t} = \vec{x}_t + c \vec{Z} \sqrt{\Delta t}...
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