WHSMACON

Every Form 4 share purchase and sale filed with the SEC, linked to the original filing.

44,781 transactions · 3,531 tickers

Stock trades disclosed by members of the House under the STOCK Act.

21,144 trades · 206 members

Weekly CFTC futures positioning — commercial hedgers against large speculators.

211,821 weekly rows · 763 markets

Every liquid futures market ranked by how stretched speculative positioning is against its own three-year range.

231 markets ranked

What moves like any given ticker — substitutes ranked by one-year correlation, filtered to comparable risk.

2,755 tickers with a close match · 5,264 covered

What US Treasuries pay across maturities, and every inversion since 1976 with the recession that followed.

232,121 observations · 33 series

What the largest managers reported owning last quarter, from SEC Form 13F filings.

26,210 managers · 72,760 securities held

One page per company: filings, ownership, every short-selling measurement, and what moves most like it.

3,167 securities with a full page · 5,264 covered

Shares sold short and not yet bought back, ranked by how many days of trading it would take to cover.

22,569 securities · 8 settlement dates

What share of each day's trading is executed as a short sale, from FINRA Reg SHO files.

12,937 securities · 20 sessions

Shares that did not settle on time, from the SEC — what the file says, and what it is routinely claimed to say.

17,222 securities · 73 settlement dates

Schedule 13D filings: investors crossing 5% of a company with a declared intent to influence it.

2,591 filings · 1,331 companies

Which listed companies the US government pays, from USASpending award records.

43 companies · 2 fiscal years

Every recession indicator, what it says today, and how many times it has been wrong.

6 indicators · 0 signalling now

Every US industry ranked by how it moves with rates, and how much of it is really one position.

152 with a page · 365 classifications

Funds that moved as one thing over the past year. Holding three of a group is holding one position three times.

173 funds with a near-identical twin

Companies where an officer bought on the open market while short sellers stayed positioned against them.

242 companies right now

When a US stock trade settles under T+1, holidays included — and the last trade date that settles inside the year.

Count NYSE sessions between any two dates.

35,448 sessions · 1,476 closures

Every day the NYSE did not open since 1885, and why.

35,448 sessions · 1,476 closures

Convert text to and from Base64.

Format, minify, and validate JSON.

Encode and decode URLs.

Generate MD5, SHA-1, SHA-256, SHA-512.

Generate unique identifiers.

Create strong, random passwords.

Convert between timestamps and dates.

Convert between HEX, RGB, HSL.

Create QR codes from text or URLs.

Compare two texts side by side.

Generate placeholder text.

Test regular expressions live.

Convert images to Base64 strings.

Decode JSON Web Tokens.

Parse and explain cron expressions.

Encode and decode HTML entities.

Preview Markdown as HTML.

Open iPhone photos anywhere. No account, no watermark.

CR2, CR3, NEF, ARW, RAF, DNG and more, without Lightroom.

DOC, XLS, PPT, WordPerfect and Publisher to PDF.

Open an Apple document without a Mac.

Find the invisible characters and lookalike letters breaking your text.

Verify a download's SHA-256 against the published value.

See a photo's hidden metadata, including GPS location, then strip it.

Find out what a file really is, whatever the extension claims.

List an archive's contents without extracting it.

Convert PDFs between versions.

Convert PDF pages to images.

Diversification is not owning many things. It is owning things that do not move together — which is measurable.

Investing

The issues that quietly make a backtest look better than the real thing.

Investing

One says how closely things move together. The other says how far. Measured values for real securities show why the difference matters.

Investing

The formula, the Rule of 72, and why the real-world result is always below the projection.

Investing

Buying at fixed intervals lowers your average cost per share. It also, on average, lowers your return — both are true.

Investing

Three S&P 500 funds track at 0.999 to each other. Since the exposure is identical, the decision is about everything else.

Investing

A market order guarantees execution, a limit order guarantees price. No order type guarantees both, and that is the whole subject.

Investing

Selling what went up to buy what went down. The arithmetic, the tax bill, and why calendar rules beat instinct.

Investing

Most filed transactions are not decisions. The code letter tells you which ones are — and open-market buying is under a tenth of the total.

Investing

Sharpe, Sortino and the ratios built on them — what each divides by, and why a high one is not a recommendation.

Investing

The arithmetic behind the figure, measured values for real securities, and the two readings people get wrong.

Investing

Sell the loss, keep the exposure, stay out of trouble. The 61-day window, what 'substantially identical' means, and how people actually pick a substitute.

Investing

Not encryption, not compression. A way to move binary through channels that only accept text — at a measurable cost.

Development

Mojibake, the BOM, and why a string's length depends on what you mean by a character.

Development

Why #808080 is not half as bright as white, and why HSL lightness lies about lightness.

Development

The syntax takes ten minutes. The environment, the overlap and the missing hour take longer.

Development

Checksums, digital signatures and password storage need three different families. Using one for another is how breaches happen.

Development

Numbers that lose precision, duplicate keys, and why you cannot store a date.

Development

Signed, not encrypted. Readable by anyone holding one, and hard to revoke — which decides where they belong.

Development

Greedy versus lazy, capture groups, and the catastrophic backtracking that takes a server down.

Development

Leap seconds, the 2038 problem, milliseconds versus seconds, and why a timestamp alone is not a time.

Development

Different parts of a URL have different rules. Using one escaping function everywhere is how links break.

Development

The versions that matter, the collision maths, and the index fragmentation nobody warns you about.

Development

Two metres of DNA in every cell, 20,000 genes, and the 98% that does not code for protein.

Genetics

Dominance, penetrance and expressivity — the reasons two people with the same variant differ.

Genetics

Four columns, several hundred thousand rows, and a set of things the file genuinely cannot tell you.

Genetics

rs numbers, odds ratios, and why 'associated with' is doing far more work than it looks.

Genetics

Comprehensive Analysis for Walter Sanders

Genetics

An app for the Grateful Dead, Widespread Panic and the wider scene — built around a recording culture that has no real parallel.

Apps

Dragging an app to the Trash removes the app. Klaar removes the rest of it — including developer toolchains.

Apps

A keep-alive utility for macOS with fine-grained control over exactly when the machine stays up.

Apps

Current conditions, hourly and daily forecasts, a map and saved locations — plus what a 30% chance of rain actually means.

Apps

Sandboxing, updates and notarisation — and why one of these two utilities could not ship through the store.

Apps