Flowsurfer is a fully-mechanical momentum sleeve for liquid US equities. It doesn't predict the market — it harvests a slow, well-documented leak in prices, and steps aside before the move exhausts.
When analysts revise estimates up, or a company beats earnings, the price doesn't fully adjust that day. The new information leaks into price over weeks to months — revision drift and post-earnings drift. That slow adjustment is the edge.
Flowsurfer isn't trying to be fast. It enters after the first surveilled hours, once capital is visibly responding, and exits as the drift fades. You will be slower than a pod shop on detection — and you don't need to win that race.
It's a sleeve, not a market substitute: a handful of names, deliberately partial exposure. Historically it runs near 0.3 beta — roughly a third as exposed as the index — so in a raging bull it trails the market on raw return.
What it offers instead is alpha (return the market doesn't explain) and downside protection: the crowding veto keeps it out of euphoric names, and hard stops cut losers fast. It's built to lose less when momentum crashes.
Entry is not a weighted sum. A name must clear both gates before its score even counts — the buy is good news PLUS evidence capital is responding, and it must not be euphoric.
An earnings revision or a news event that should pull price over the following weeks. The strongest, most durable input — revision drift persists for months.
Relative strength vs the market, sector and peers, plus volume behaving like accumulation. Proof the move is real, not a quote blip. Required to enter.
A 0–100 lateness score — distance above moving averages, overbought RSI, how long the move has run. Above the ceiling it's a hard veto: never buy euphoria.
There is no manual override anywhere in the system — no button to hold, add, or exit on a hunch. Entries and exits are score-driven or stop-driven only.
Backtest over the 503-name S&P 500, 2021-09-22 → 2026-06-24, net of costs. Validates the price/volume/crowding mechanics; the earnings-revision signal can only be proven forward, which is what the live track record is for.