Recent content by Begbie00

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    What a stupid study

    The car analogy sucks. Stop using it. The point is if you view price declines solely as a sign that your hypothesis got more profitable (and you should be averaging down) rather than a sign that maybe your hypothesis is wrong, you're in for some bad times.
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    What a stupid study

    Yikes. It's the stop loss that tells you you may have a blindfold on in the first place, and you should pull over and take it off first before you get back on the road.
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    SOFR Prices

    No. It reflects what the "average" SOFR rate (via the compounding formula) will be from mid-December to mid-March. Meaning the December & January Fed meetings have more impact on it than anything that happens in mid-March.
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    SOFR Prices

    It's not a unique feature, it's interesting terminology. The "September" 3-month future SR3 U23 is actually a future with a "Reference Quarter" from September to December. It's just like any "averaging" future (e.g., Fed Funds Futures) in that the price (including final settlement) is some...
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    SOFR Prices

    That makes no sense. Barchart is either butchering their contract specs or we're not interpreting them properly. Chapter 460 Three-Month SOFR Futures 46002. TRADING SPECIFICATIONS 46002.G. Termination of Trading Trading in an expiring contract shall terminate at the close of trading on the...
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    Efficiently Reading and Processing Large CSV Files in Python to Avoid Memory Issues

    Some general guidance, since you've given us almost nothing to go on. General trading data rule: Almost any meaningful statistic (e.g, mean, variance, covariance, principle components, etc.) can be cast as an "on-line" calculation. This means with very few exceptions, you probably don't need to...
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    Bye bye ASML & TSMC! China now makes its own lithography machines

    The challenge isn't just to make EUV once, it's the following: - have a machine supply chain that enables production at industrial scale (vs. a single customer) ... this is what ASML does so well; and - have the proprietary knowledge to operate the EUV machines effectively ... this is what TSMC...
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    Consolidated Corporate Actions

    Is there a data feed that consolidates US equity corporate actions (dividends, splits, etc.), similar to the way the Securities Information Processors (SIPs ... CTA/UTP) consolidate and distribute trades and top-of-book quotes? Or would one have to go to each exchange (NYSE, Nasdaq, CBOE, etc.)...
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    Dual Momentum Sector Strategy - Use AGG or BIL as Bond proxy?

    Hi all, I'm using ETFs to implement Gary Antonacci's "Dual Momentum", which relies upon a signal comparing US equities (SPY, etc.) to "Bonds". He mentions the Barclays US Aggregate Index (in my view, most similar to AGG) but uses BIL in a chart showing performance. If I'm not mistaken, BIL is...
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    Margin and Long/Short Portfolios

    Got it, thank you.
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    Margin and Long/Short Portfolios

    Because I'm not trying to build a bicycle, I'm trying to understand how margin works in the context of long/short portfolios (e.g., of the kind that test excess returns on any number of stock market anomalies). Whatever indicators generated a 3-month relative signal of 10 stocks vs. SPY is...
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    Margin and Long/Short Portfolios

    I'd like to implement a long-short momentum strategy (~3 month hold period) and am not sure how much cash I need to do so. If I have $10k cash in my account now and want to go long a basket of 10 stocks and short an equivalent amount of SPY, how big can each side of the long/short be given my...
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