What Does Low Realized Volatility Mean for Position Size?
CALM is the Stop Risk Score's lowest volatility band, any score below 35, and it clears a stock for the engine's full suggested risk, 1% per trade. On 2026-09-30, 3,343 of 4,634 scored stocks, most of the universe, sat in this band.
What Puts a Stock in the CALM Band
CALM is one of the Macro Engine's Stop Risk Score bands: any score below 35 on the six-input formula that measures how much room a stock's own recent realized volatility says a stop needs. It is the widest, best-populated band the score produces, and it is not a forecast. A CALM reading describes the stock's own recent price behavior, not what it does next.
Reaching CALM means the six weighted inputs, the 20-day volatility percentile foremost among them, are all reading quiet enough together to keep the combined score under the 35 line. A stock does not need every single input to be quiet: a small shock or a modest drawdown can still leave the combined score under the threshold if the rest of the picture is calm enough to offset it.
On 2026-09-30, the engine scored 4,634 stocks. 3,343 of them, the largest single group by a wide margin, scored below 35 and read CALM. The next band up, NORMAL, held 929 stocks.
On 2026-09-30, 3,343 of 4,634 scored stocks read CALM, more than every other band combined. The scored universe's average Stop Risk Score that day was 27.8, itself inside the CALM range.
A CALM reading means a stock's own realized volatility is quiet relative to its trailing history right now, not that it will stay that way. Most of the scored universe sitting here on any given day, 3,343 of 4,634 on 2026-09-30, is the ordinary state of the market, not an unusual one.
The engine's own consequence for CALM is the full suggested-risk band, 1% per trade, the widest of the four tiers. How that band actually gets sized into a position, including any driver cap layered above it, is a separate question from the reading itself.
What makes this state flip
CALM has one real boundary: 35. A score just under it stays CALM at the full 1% band; a score of 35 or above moves to NORMAL, and the suggested risk cuts to 0.75%.
The six inputs behind the score do not all move at the same speed, so a score sitting close to 35 can cross it on one fast-moving input, a shock or a sudden percentile jump, while the slower-moving ones, like the 20-day drawdown, have not caught up yet.
What this does not tell you
This band describes recent realized behavior, not the setup or the direction of a trade. It also cannot distinguish a genuinely quiet stock from one running on borrowed calm right before a shock: the score only sees what has already happened, never what is about to.
Which stocks are actually leading or lagging their sector, or whether a name is worth trading at all, are separate questions a CALM reading does not answer.
Frequently asked questions
What does a CALM Stop Risk Score mean?
CALM means a stock scored below 35 on the Stop Risk Score, the engine's six-input realized-volatility formula. It is the widest, best-populated band, and it clears the stock for the engine's full suggested risk, 1% per trade.
What percentage should I risk on a CALM-rated stock?
The engine's own suggested risk for a CALM score, below 35, is 1% per trade, the top of its four-tier ladder. On 2026-09-30, 3,343 of 4,634 scored stocks qualified for this full band.
How many stocks are usually rated CALM?
On 2026-09-30, 3,343 of 4,634 scored stocks read CALM, more than NORMAL, ELEVATED and STRESSED combined (929, 185 and 32). That made it the largest single band the Stop Risk Score produced that day.
Can a CALM stock still gap or crash?
Yes. CALM is built entirely from realized volatility, what a stock's price has already done over its trailing history, not a prediction. A quiet 20-day history gives no protection against a headline the price action had no way to anticipate.
Related
A CALM score is a read on the recent past, not a guarantee about the next session. A quiet trailing history can still sit in front of a move the score had no way to see coming.