AMPXAmprius Technologies, Inc.

$9.45-20% 1Y

What is the market doing?

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The market is leaning against it: in a downtrend (−29% vs 200-day) and a crowded short (+17% of shares).

2 to watch, 1 neutral
TrendDowntrendderived · Oct 9, 2026

In a downtrend, below its 50- and 200-day averages. Price is −29% vs its 200-day average.

Insider conviction−$1.3M (90 days to Oct 8, 2026)SEC EDGAR · Oct 8, 2026

Insiders were net sellers over the 90 days ending Oct 8, 2026; selling is often routine (taxes, diversification).

Short interest17% of sharesFINRA · Sep 15, 2026

A crowded short, settled Sep 15, 2026, about a week of normal trading to cover. Down 2.1% since the previous count, down from 16.7% of shares outstanding three months ago.

Against the whole market›

Percentile against every name Ryufin tracks. Higher is better; the tick marks the middle of the market. Context, not one of the checks above.

1-year returnbehind 79% of the market
vs 200-day avgbottom 6% of the market

Where this answer is blind. Insider selling is often routine (taxes, diversification); only cluster buying is a strong tell.

How AMPX is trading

Amprius Technologies, Inc. is −20% over the past year while the S&P 500 is +18%: 38 points behind the market.

−20%

1-year return · S&P 500 +18%

vs 200-day average
−29%

vs 200-day average · a clear downtrend

RSI (14)
45

RSI (14) · neutral

Below its 52-week high
59%

Below its 52-week high

Sep 18, 2024$0.81 – $22.91 · dashed line: 200-day averageOct 9, 2026
Details›
Last close2026-10-09
$9.45
1 monthS&P 500 +2.7%
−0.89%
1 yearS&P 500 +18%
−20%
vs 50-day average$10.14
−6.8%
52-week high
$22.91
52-week low
$7.83
Annualised volatility
118%
Insider buying, net, 6 monthsForms 3/4/5 to 2026-10-08
−$6.3M
Calendar-year price return
YearReturn
2026 (year to date)+20%
2025+182%
2024−47%
2023−33%
Average return by calendar month, 2022–2026
MonthYearsPositiveAverage
Jan42 of 4+9.0%
Feb40 of 4−15%
Mar43 of 4+20%
Apr42 of 4−4.1%
May41 of 4−5.9%
Jun41 of 4+1.0%
Jul42 of 4+9.1%
Aug42 of 4−8.6%
Sep42 of 4+12%
Oct53 of 5+7.9%
Nov42 of 4+17%
Dec42 of 4+1.6%

End-of-day closes from IEX; the S&P 500 comparison uses SPY over the same window. Prices are a reference point, not a basis for trading decisions.

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