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by mrowell
September 28th, 2012, 12:48 pm
Forum: General Forum
Topic: Does CCPs post Variation Margin?
Replies: 16
Views: 14202

Does CCPs post Variation Margin?

Hi - I'm not sure, but I think that may happen for trades cleared off of the LME.. but don't quote mecheers
by mrowell
September 25th, 2012, 12:22 pm
Forum: Off Topic
Topic: How to sound proof a room
Replies: 36
Views: 12932

How to sound proof a room

<t>Saw someone say room within a room.. yes do this. If you cannot isolate it mechanically from the outer shell then go heavy build brick inner wall and fill cavity with sandSound reduction is proportional to mass... Then if its a regular box shape internally either build yiourself some quadratic re...
by mrowell
September 25th, 2012, 11:13 am
Forum: General Forum
Topic: Does CCPs post Variation Margin?
Replies: 16
Views: 14202

Does CCPs post Variation Margin?

<t>yes you dofor OTC instruments (IR swaps, FX, CDS) VM is really collateralised mark to market margin and goes both ways. When you receive a mark to market margin payment you have "use" of that collateral and have to pay interest (for USD it's usually Fed funds). Conversely if you have to pay mark ...
by mrowell
July 19th, 2012, 6:28 am
Forum: Numerical Methods Forum
Topic: Constrained nonlinear optimisation
Replies: 8
Views: 13443

Constrained nonlinear optimisation

<t>I've had success using Nelder-Mead (unconstrainted and unbounded variables optimizer) along with variable transformation to getthe optimizer variables within required bounds. Other constraints added by using the penalty function approach.. all wrapped up using ExcelDNA (as has laready been sugges...
by mrowell
January 17th, 2012, 7:27 am
Forum: General Forum
Topic: FX Forwards : Middle East
Replies: 2
Views: 15245

FX Forwards : Middle East

Bloomberg has forward rate pricing. Look under SAR<Curncy>FRD<go> for example for the Riyal.Can't vouch for them though.
by mrowell
October 21st, 2011, 8:28 am
Forum: General Forum
Topic: iCap Reset
Replies: 3
Views: 19516

iCap Reset

Hi - thankswhat risk is it designed to mitigate? Or its matching fixing periods on swaps (i.e FRAs) and just netting them?Cheers
by mrowell
October 21st, 2011, 8:21 am
Forum: General Forum
Topic: iCap Reset
Replies: 3
Views: 19516

iCap Reset

Hipossibly stupid question, but what does iCaps Reset service actually do?Thanks
by mrowell
June 10th, 2011, 12:40 pm
Forum: General Forum
Topic: iTraxx Tranche Fixings
Replies: 2
Views: 21542

iTraxx Tranche Fixings

S9 is still the most liquid series for iTraxx tranches. Complete lack of customer flow means street just trading out of that series (as the other poster pointed out)
by mrowell
September 15th, 2010, 8:26 am
Forum: General Forum
Topic: CDSW
Replies: 1
Views: 24534

CDSW

You know that CDSW uses the ISDA model (by default now) .. well you can get the C source from www.cdsmodel.com.. it has an Excel addin (XLL) so its trivial to use in Excel formulae directly or in VBA via Application.RunCheers- Mark
by mrowell
June 21st, 2010, 11:15 am
Forum: Numerical Methods Forum
Topic: Linear programming with compound either-or constraints
Replies: 0
Views: 30315

Linear programming with compound either-or constraints

<t>Hi - long time since I posted, but here goes...I have an optimization problem, with a linear objective but with either-or constraints of the form(f(x) = 0 and g(x) = M)or(g(x) = 0 and (f(x) = 0 or f(x) = Q))I know how to model simpler either-or constraints in LP using binary auxilliary variables ...
by mrowell
October 22nd, 2009, 1:13 pm
Forum: General Forum
Topic: Off the run CDX spreads/prices
Replies: 9
Views: 37007

Off the run CDX spreads/prices

<r>QuoteOriginally posted by: d32I'm trying to value a portfolio of CDX's, most of which are off-the-run (currently the on the runs are S13's). For many off-the-run CDX's Markit do not provide a quote. I have also tried CMA but I'm not sure if their quotes are reliable as they can be based on histor...
by mrowell
May 2nd, 2009, 4:50 am
Forum: Programming and Software Forum
Topic: generation of student t distribution random variable
Replies: 2
Views: 42941

generation of student t distribution random variable

One way is to just generate a uniform random number between 0 & 1 and then call the inverse T CDF to get the RV.
by mrowell
March 26th, 2008, 7:51 am
Forum: General Forum
Topic: Upfront payment in CDS
Replies: 1
Views: 57176

Upfront payment in CDS

<t>50% is just a payment "now".. if there is no inbuilt running fixed spread (upfronts usually go along with +500 running) then for a par trade this upfront is equal to the PV on the default leg...(dont know whether that helps) but0 = pv = upfront + running spread in bp / 10000 * dv01 - pv of defaul...
by mrowell
March 19th, 2008, 10:55 am
Forum: General Forum
Topic: CDS Switch
Replies: 1
Views: 57278

CDS Switch

buy/sell 5yr protection sell/buy 7yr protection.The bid of 4 referes to the buy on the short leg, sell on thelong I think.
by mrowell
March 5th, 2008, 5:29 am
Forum: Programming and Software Forum
Topic: Auto login to Bloomberg
Replies: 1
Views: 60171

Auto login to Bloomberg

You could try the SendKeys function -- doesn't always work reliably though...Mark
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