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Apr
22
awarded  Teacher
Apr
22
comment What mathematical characteristics are required from the asset price process in order to stay within the RNP framework?
If you can find a risk-free portfolio that replicates the conjured payoff, return must equal the risk-free interest rate. Else, an arbitrage opportunity exists.
Apr
22
answered What mathematical characteristics are required from the asset price process in order to stay within the RNP framework?
Apr
19
comment HFT: What is the big differentiator in comparison to other time scales?
Has the claim "depth and length of drawdown is reduced" been investigated anywhere? While I have heard about cases similar to the mentioned +0.5 +0.5 ... -20 = 20 as well, it is just anecdotal. On average most HFTs might not be profitable. Does anybody know literature or have evidence for one or the other?
Apr
18
comment Does HFT make sense in a pro-rata market?
Taking liquidity usually means filling someone else's.
Apr
11
comment What kind of basic framework or application do you use to run your trading algorithms?
Hm, yesterday I saw a post where somebody explained his/her execution backtest. After estimating expected latency, she chose a range of likely prices; now you can look at the average price you'd get or take the worst price in that range. I believe looking at both cases makes execution more robust.