PRLB · Proto Labs Inc

$78.59 +0.10 (+0.13%)

S&P 600 member Russell 2000 member Rebalance outlook locked

Market Cap

$1.88B

23.92M

Daily short-sale volume published by FINRA from its trade-reporting facilities. It measures how many shares were sold short each day as a share of total volume — a daily flow, not the total outstanding short position.

1M 3M 6M 1Y 5Y All

Short Volume

Date	Short Volume	Short Exempt	Total Volume	Short %
2026-09-02	29,071	0	43,550	66.8%
2026-09-01	34,510	0	48,324	71.4%
2026-08-31	25,387	0	37,859	67.1%
2026-08-28	40,408	0	63,215	63.9%
2026-08-27	31,874	0	63,025	50.6%
2026-08-26	25,762	0	54,484	47.3%
2026-08-25	31,882	0	55,446	57.5%
2026-08-24	28,722	0	63,031	45.6%
2026-08-21	26,878	0	54,002	49.8%
2026-08-20	26,874	281	62,731	42.8%
2026-08-19	46,772	0	89,016	52.5%
2026-08-18	23,438	74	63,192	37.1%
2026-08-17	18,988	0	52,135	36.4%
2026-08-14	23,554	0	32,990	71.4%
2026-08-13	29,259	0	54,088	54.1%
2026-08-12	32,220	0	52,746	61.1%
2026-08-11	30,561	0	55,747	54.8%
2026-08-10	35,249	0	59,716	59.0%
2026-08-07	22,384	246	42,587	52.6%
2026-08-06	23,691	436	52,898	44.8%
2026-08-05	63,261	833	112,041	56.5%
2026-08-04	95,373	753	163,103	58.5%
2026-08-03	44,731	0	84,520	52.9%
2026-07-31	39,168	0	84,921	46.1%
2026-07-30	27,930	0	44,006	63.5%
2026-07-29	35,901	256	59,809	60.0%
2026-07-28	20,010	0	51,715	38.7%
2026-07-27	33,693	0	53,437	63.1%
2026-07-24	17,929	0	34,500	52.0%
2026-07-23	20,990	43	41,303	50.8%
2026-07-22	23,591	10	41,181	57.3%
2026-07-21	19,683	0	33,222	59.2%
2026-07-20	28,044	0	43,350	64.7%
2026-07-17	39,235	1	59,509	65.9%
2026-07-16	23,780	0	47,542	50.0%
2026-07-15	32,123	0	56,830	56.5%
2026-07-14	43,651	0	65,291	66.9%
2026-07-13	31,148	35	47,821	65.1%
2026-07-10	20,269	8	57,559	35.2%
2026-07-09	36,580	60	186,602	19.6%
2026-07-08	46,523	7,231	140,317	33.2%
2026-07-07	27,535	0	134,035	20.5%
2026-07-06	24,431	5	110,226	22.2%
2026-07-02	29,504	195	70,201	42.0%
2026-07-01	23,244	96	71,154	32.7%
2026-06-30	20,186	0	61,415	32.9%
2026-06-29	26,057	1,324	62,253	41.9%
2026-06-26	26,731	0	65,011	41.1%
2026-06-25	21,207	54	53,152	39.9%
2026-06-24	24,563	0	75,451	32.6%

Showing 1–50 of 65 days

Key facts CIK 1443669 CUSIP 743713109 13F (30d) 219 filings 218 filers Visit website Investor relations