
Undertow: Small-Cap Alerts
See the spike. Know the risk.
2 ratings
Free
In-App Purchases
Rating summary
About
Undertow is distressed small caps and trade risk analysis. When a small stock makes an unusual move, Undertow tells you while it is happening and shows what is behind it.
Live alerts
- Today's biggest small-cap moves as they happen, and moves in the stocks you follow
- The filings behind each move, cited and explained for that stock: new shares being sold, delisting notices, big holders who can push the board, board and auditor changes
- What comparable moves did in the weeks after, the fades and the squeezes alike
Listing watch
- Stocks under the exchange's minimum price, with every board move that follows: reverse split votes, renames, new share sales
Who is behind the stock
- Insiders, their stake and their trades
- Holders above 5%, including those who say they may seek influence
- Trades by members of Congress, from their STOCK Act reports
- SEC filings in plain words, with the passage that matters highlighted
Your AI assistant
- Connect Undertow to Claude and ask about any stock's alerts, filings and holders in plain words
Your portfolio
- Shares you type in (never connected to a broker), with where your money is and its risk mix
Squad
- Posts from other traders about the stocks you follow, with replies
The record
- Every alert is followed after it is sent, wins and losses shown
Undertow shows statistics from past cases and public filings. It is not investment advice, does not predict prices and never tells you to buy or sell.
Undertow Pro: US$5.99 per week (prices vary by country), with a 7-day free trial for new subscribers. Payment is charged to your Apple ID when the trial ends, and the subscription renews weekly unless cancelled at least 24 hours before the end of the current period. Manage or cancel any time in your Apple ID subscription settings.
Terms of Service: https://undertow.floorfn.com/terms
Privacy Policy: https://undertow.floorfn.com/privacy
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What's New in Undertow
2.1.1
October 28, 2026
Fixes the comments button on a stock opened from Search, so it now opens that stock's comments and Done returns you to where you were. Stock pages load faster. Undertow Pro subscription setup is included in this version.
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Subscriptions & In-App Purchases
Undertow Pro
Push alerts on your stocks and the day's top setups.
$5.997 Days
7 Days trial





