PRLBProto Labs, Inc.

$93.72+85% 1Y

What is the market doing?

Mixed

No clear lean: nothing decisive, though in an uptrend.

1 good, 2 neutral
TrendUptrendderived · Oct 9, 2026

In an uptrend, above its rising 50- and 200-day averages. Price is +36% vs its 200-day average.

Insider conviction−$903K (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 interest3.1% of sharesFINRA · Sep 15, 2026

Moderately shorted, settled Sep 15, 2026, about a week of normal trading to cover. Up 23% since the previous count, up from 2.9% 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 returntop 10% of the market
vs 200-day avgtop 7% of the market

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

How PRLB is trading

Proto Labs, Inc. is +85% over the past year while the S&P 500 is +18%: 67 points ahead of the market.

+85%

1-year return · S&P 500 +18%

vs 200-day average
+36%

vs 200-day average · a clear uptrend

RSI (14)
62

RSI (14) · neutral

Below its 52-week high
5.1%

Below its 52-week high

Sep 18, 2024$26.71 – $98.70 · dashed line: 200-day averageOct 9, 2026
Details›
Last close2026-10-09
$93.72
1 monthS&P 500 +2.7%
+18%
1 yearS&P 500 +18%
+85%
5 yearsS&P 500 +88%
+36%
vs 50-day average$86.38
+8.5%
52-week high
$98.70
52-week low
$46.81
Annualised volatility
52%
Insider buying, net, 6 monthsForms 3/4/5 to 2026-10-08
−$155K
Calendar-year price return
YearReturn
2026 (year to date)+85%
2025+29%
2024+0.33%
2023+53%
2022−50%
2021−67%
2020+51%
2019−10.0%
2018+9.5%
2017+101%
Average return by calendar month, 2016–2026
MonthYearsPositiveAverage
Jan108 of 10+8.0%
Feb105 of 10−2.3%
Mar102 of 10−5.8%
Apr106 of 10+1.1%
May108 of 10+5.1%
Jun106 of 10+3.9%
Jul116 of 11+0.16%
Aug114 of 11+0.66%
Sep116 of 11+0.95%
Oct112 of 11−7.4%
Nov107 of 10+11%
Dec105 of 10+0.99%

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.