Blog
TellHawk blog
Practical notes on reading filings, testing strategies on history, and using market data honestly.
Backtesting basics: walk-forward testing and traps
How to read a backtest honestly: in-sample versus out-of-sample, walk-forward folds, costs, look-ahead bias, and why one flattering curve proves little.
Insider buying screener: how to read Form 4 purchases
How to screen for insider buying from SEC Form 4 filings: transaction codes, why open-market purchases differ from awards, and the limits of the signal.
Prop firm challenge rules: loss limits and drawdown
Profit targets, daily loss, maximum drawdown, trailing versus static limits and consistency rules: what prop firm challenge rules mean and how to track them.
SEC filings for stock research: a plain guide
What the 10-K, 10-Q, 8-K, proxy, Form 4 and 13F each tell you, when they arrive, and how to read them without over-reading. For education, not advice.
Short squeeze analysis: what the data can and cannot show
A plain guide to short squeeze analysis: short interest, days to cover, short volume versus short interest, and what none of these numbers can predict.
What to record in a trading journal, and how to review it
A practical guide to trading journal fields, a weekly review routine, and the questions that turn a log of trades into something you can learn from.