Proto Labs Inc (PRLB) — Institutional Holders, Q2 2026

278 institutional investment managers reported a PRLB position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $1.8B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← PRLB stock profile

PRLB in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

Added to

101

Trimmed

Sold out

Biggest buyers

GOLDMAN SACHS GROUPAdded · +262,236 sh+$21.4M
BlackRockAdded · +218,347 sh+$17.8M
JPMORGAN CHASEAdded · +137,138 sh+$11.2M
FIRST ADVISORSAdded · +131,922 sh+$10.8M
NuveenAdded · +103,120 sh+$8.4M

Biggest sellers

Rubric Capital ManagementTrimmed · -377,708 sh-$30.8M
Qube Research & Technologies LtdSold out · -148,622 sh-$12.1M
DIMENSIONAL FUND ADVISORSTrimmed · -120,051 sh-$9.8M
DISCIPLINED GROWTH INVESTORSTrimmed · -116,841 sh-$9.5M
LAZARD ASSET MANAGEMENTTrimmed · -92,247 sh-$7.5M

PRLB 13F holders ranked 1–100 of 278

Institutional investors reporting a position in Proto Labs Inc on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 3,896,222 sh	3,896,222	$317.6M	<0.01%	+5.9%
2	DISCIPLINED GROWTH INVESTORS#2 · 2,380,514 sh	2,380,514	$194.0M	3.29%	-4.7%
3	VANGUARD PORTFOLIO MANAGEMENT#3 · 1,599,765 sh	1,599,765	$130.4M	<0.01%	+4.0%
4	DIMENSIONAL FUND ADVISORS#4 · 1,152,305 sh	1,152,305	$93.9M	0.02%	-9.4%
5	STATE STREET#5 · 1,138,462 sh	1,138,462	$92.8M	<0.01%	+4.3%
6	VANGUARD CAPITAL MANAGEMENT#6 · 1,054,623 sh	1,054,623	$86.0M	<0.01%	+1.4%
7	AMERICAN CAPITAL MANAGEMENT#7 · 619,845 sh	619,845	$50.5M	2.27%	-1.3%
8	GEODE CAPITAL MANAGEMENT#8 · 614,028 sh	614,028	$50.1M	<0.01%	+5.8%
9	RENAISSANCE TECHNOLOGIES#9 · 469,251 sh	469,251	$38.2M	0.05%	-9.8%
10	PRUDENTIAL FINANCIAL#10 · 457,810 sh	457,810	$37.3M	0.04%	+14.4%
11	FMR#11 · 442,659 sh	442,659	$36.1M	<0.01%	+4.8%
12	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP#12 · 440,816 sh	440,816	$35.9M	0.02%	-5.0%
13	Nuveen#13 · 420,059 sh	420,059	$34.2M	<0.01%	+32.5%
14	GOLDMAN SACHS GROUP#14 · 403,179 sh	403,179	$32.9M	<0.01%	+186.1%
15	DRIEHAUS CAPITAL MANAGEMENT#15 · 370,151 sh	370,151	$30.2M	0.17%	+0.3%
16	CHARLES SCHWAB INVESTMENT MANAGEMENT#16 · 354,188 sh	354,188	$28.9M	<0.01%	-1.7%
17	MORGAN STANLEY#17 · 314,778 sh	314,778	$25.7M	<0.01%	+7.2%
18	S Squared Technology#18 · 288,120 sh	288,120	$23.5M	7.29%	-2.7%
19	NORTHERN#19 · 284,562 sh	284,562	$23.2M	<0.01%	+6.6%
20	FIRST ADVISORS#20 · 224,792 sh	224,792	$18.3M	0.01%	+142.1%
21	JPMORGAN CHASE#21 · 224,717 sh	224,717	$17.9M	<0.01%	+156.6%
22	D. E. Shaw#22 · 211,366 sh	211,366	$17.2M	<0.01%	-6.3%
23	NORDEA INVESTMENT MANAGEMENT AB#23 · 203,883 sh	203,883	$16.5M	0.01%	-4.9%
24	Hillsdale Investment Management#24 · 191,594 sh	191,594	$15.6M	0.36%	+9.9%
25	JUPITER ASSET MANAGEMENT LTD#25 · 188,539 sh	188,539	$15.4M	0.08%	-3.2%
26	PANAGORA ASSET MANAGEMENT#26 · 180,713 sh	180,713	$14.7M	0.05%	+3.4%
27	VANGUARD FIDUCIARY#27 · 157,987 sh	157,987	$12.9M	<0.01%	+2.9%
28	Bank of New York Mellon#28 · 143,782 sh	143,782	$11.7M	<0.01%	+2.8%
29	JANE STREET GROUP#29 · 143,527 sh	143,527	$11.7M	<0.01%	+150.2%
30	PRINCIPAL FINANCIAL GROUP#30 · 135,136 sh	135,136	$11.0M	<0.01%	+1.1%
31	BANK OF AMERICA#31 · 125,997 sh	125,997	$10.3M	<0.01%	-2.4%
32	Connor, Clark & Lunn Investment Management Ltd.#32 · 120,473 sh	120,473	$9.8M	0.02%	-4.0%
33	GAGNON SECURITIES#33 · 116,283 sh	116,283	$9.5M	1.83%	+4.9%
34	RICE HALL JAMES & ASSOCIATES#34 · 108,964 sh	108,964	$8.9M	0.43%	-4.1%
35	Rubric Capital Management#35 · 108,692 sh	108,692	$8.9M	0.08%	-77.7%
36	Invesco Ltd.#36 · 108,421 sh	108,421	$8.8M	<0.01%	+22.4%
37	ACADIAN ASSET MANAGEMENT#37 · 99,186 sh	99,186	$8.1M	<0.01%	+304.9%
38	UBS Group AG#38 · 97,304 sh	97,304	$7.9M	<0.01%	-42.3%
39	PUBLIC SECTOR PENSION INVESTMENT BOARD#39 · 95,645 sh	95,645	$7.8M	0.02%	-9.4%
40	MILLENNIUM MANAGEMENT#40 · 92,960 sh	92,960	$7.6M	<0.01%	+259.9%
41	CITADEL ADVISORS#41 · 88,625 sh	88,625	$7.2M	<0.01%	+99.1%
42	AMERICAN CENTURY COMPANIES#42 · 79,056 sh	79,056	$6.4M	<0.01%	+0.3%
43	AMERIPRISE FINANCIAL#43 · 69,786 sh	69,786	$5.7M	<0.01%	+19.2%
44	Edgestream Partners, L.P.#44 · 65,799 sh	65,799	$5.4M	0.16%	+246.0%
45	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#45 · 65,044 sh	65,044	$5.3M	<0.01%	-1.1%
46	Informed Momentum#46 · 64,803 sh	64,803	$5.3M	0.47%	-1.5%
47	RHUMBLINE ADVISERS#47 · 57,970 sh	57,970	$4.7M	<0.01%	-11.0%
48	Legal & General Group Plc#48 · 56,739 sh	56,739	$4.6M	<0.01%	-2.8%
49	Roubaix Capital#49 · 55,415 sh	55,415	$4.5M	1.62%	New
50	FRANKLIN RESOURCES#50 · 55,096 sh	55,096	$4.5M	<0.01%	-3.3%
51	AQR CAPITAL MANAGEMENT#51 · 53,319 sh	53,319	$4.3M	<0.01%	-3.3%
52	ZACKS INVESTMENT MANAGEMENT#52 · 52,989 sh	52,989	$4.3M	0.03%	+11.4%
53	Swiss National Bank#53 · 47,700 sh	47,700	$3.9M	<0.01%	+1.3%
54	INTECH INVESTMENT MANAGEMENT#54 · 45,776 sh	45,776	$3.7M	0.03%	+17.5%
55	Campbell & Investment Adviser#55 · 42,798 sh	42,798	$3.5M	0.18%	+181.8%
56	HUSSMAN STRATEGIC ADVISORS#56 · 42,000 sh	42,000	$3.4M	0.79%	-20.0%
57	PRICE T ROWE ASSOCIATES#57 · 39,013 sh	39,013	$3.2M	<0.01%	+17.6%
58	AIMZ Investment Advisors#58 · 38,728 sh	38,728	$3.2M	0.87%	0.0%
59	Point72 Asset Management, L.P.#59 · 37,033 sh	37,033	$3.0M	<0.01%	+14.3%
60	ALGERT GLOBAL#60 · 36,695 sh	36,695	$3.0M	0.04%	+480.2%
61	BNP PARIBAS FINANCIAL MARKETS#61 · 36,457 sh	36,457	$3.0M	<0.01%	+189.5%
62	ARK Investment Management#62 · 35,418 sh	35,418	$2.9M	0.02%	-22.5%
63	POLEN CAPITAL MANAGEMENT#63 · 35,011 sh	35,011	$2.9M	0.02%	-6.9%
64	SUSQUEHANNA FUNDAMENTAL INVESTMENTS#64 · 33,760 sh	33,760	$2.8M	0.05%	+227.0%
65	ExodusPoint Capital Management#65 · 33,683 sh	33,683	$2.7M	0.02%	New
66	Quantinno Capital Management#66 · 32,730 sh	32,730	$2.7M	<0.01%	+18.1%
67	FEDERATED HERMES#67 · 32,144 sh	32,144	$2.6M	<0.01%	+2.5%
68	CITIGROUP#68 · 31,308 sh	31,308	$2.6M	<0.01%	+105.9%
69	AEGON ASSET MANAGEMENT UK PLC#69 · 31,000 sh	31,000	$2.5M	0.03%	New
70	VOYA INVESTMENT MANAGEMENT#70 · 30,839 sh	30,839	$2.5M	<0.01%	+2.3%
71	BRIDGEWAY CAPITAL MANAGEMENT#71 · 27,000 sh	27,000	$2.2M	0.04%	+22.7%
72	Engineers Gate Manager#72 · 26,780 sh	26,780	$2.2M	0.03%	+84.7%
73	THRIVENT FINANCIAL FOR LUTHERANS#73 · 25,476 sh	25,476	$2.1M	<0.01%	+61.2%
74	DEUTSCHE BANK AG\#74 · 25,119 sh	25,119	$2.0M	<0.01%	-16.5%
75	WELLS FARGO & COMPANY#75 · 24,633 sh	24,633	$2.0M	<0.01%	+110.1%
76	HSBC PLC#76 · 24,699 sh	24,699	$2.0M	<0.01%	+60.6%
77	SEI INVESTMENTS#77 · 24,075 sh	24,075	$2.0M	<0.01%	+173.0%
78	HRT FINANCIAL#78 · 21,965 sh	21,965	$1.8M	<0.01%	+21.5%
79	GILDER GAGNON HOWE#79 · 21,274 sh	21,274	$1.7M	0.02%	0.0%
80	GABELLI FUNDS#80 · 21,132 sh	21,132	$1.7M	0.01%	0.0%
81	Jackson Creek Investment Advisors#81 · 22,459 sh	22,459	$1.7M	0.56%	+167.7%
82	SG Capital Management#82 · 20,068 sh	20,068	$1.6M	0.14%	New
83	ALLIANCEBERNSTEIN L.P.#83 · 27,640 sh	27,640	$1.6M	<0.01%	+33.3%
84	GREAT WEST LIFE ASSURANCE#84 · 19,000 sh	19,000	$1.5M	<0.01%	-4.3%
85	TEACHER RETIREMENT SYSTEM OF TEXAS#85 · 18,885 sh	18,885	$1.5M	<0.01%	-9.7%
86	Russell Investments Group, Ltd.#86 · 18,166 sh	18,166	$1.5M	<0.01%	+218.5%
87	MARSHALL WACE, LLP#87 · 16,921 sh	16,921	$1.4M	<0.01%	-75.2%
88	VANGUARD ASSET MANAGEMENT, Ltd#88 · 16,856 sh	16,856	$1.4M	<0.01%	+15.0%
89	Squarepoint Ops#89 · 16,439 sh	16,439	$1.3M	<0.01%	-60.2%
90	State of Wyoming#90 · 16,370 sh	16,370	$1.3M	0.13%	+376.4%
91	CAPTRUST FINANCIAL ADVISORS#91 · 15,935 sh	15,935	$1.3M	<0.01%	+0.9%
92	Trexquant Investment#92 · 14,219 sh	14,219	$1.2M	<0.01%	-79.3%
93	MetLife Investment Management#93 · 14,086 sh	14,086	$1.1M	<0.01%	+5.0%
94	Marks Group Wealth Management#94 · 13,991 sh	13,991	$1.1M	0.10%	+16.1%
95	SG Americas Securities#95 · 13,311 sh	13,311	$1.1M	<0.01%	+107.0%
96	Jump Financial#96 · 13,194 sh	13,194	$1.1M	<0.01%	New
97	State of Tennessee, Treasury Department#97 · 13,028 sh	13,028	$1.1M	<0.01%	-26.5%
98	Haven Private#98 · 12,966 sh	12,966	$1.1M	0.40%	-5.5%
99	Amundi#99 · 12,941 sh	12,941	$1.1M	<0.01%	-8.1%
100	BAILARD#100 · 12,881 sh	12,881	$1.0M	—	-7.9%

Funds that sold out of PRLB in Q2 2026 (24)

Held PRLB at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held PRLB in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
Qube Research & Technologies Ltd148,622 sh	148,622	$8.5M
Polar Asset Management Partners60,369 sh	60,369	$3.4M
Archon Capital Management48,500 sh	48,500	$2.8M
Integrated Quantitative Investments31,505 sh	31,505	$1.8M
Bastion Asset Management28,270 sh	28,270	$1.6M
VIRGINIA RETIREMENT SYSTEMS ET Al23,000 sh	23,000	$1.3M
Quantbot Technologies20,782 sh	20,782	$1.2M
Legato Capital Management12,113 sh	12,113	$690.7K
Bridgewater Associates7,690 sh	7,690	$438.5K
IEQ CAPITAL6,788 sh	6,788	$387.1K
Man Group plc5,114 sh	5,114	$291.6K
Schonfeld Strategic Advisors4,794 sh	4,794	$273.4K
Dynamic Technology Lab Private Ltd4,380 sh	4,380	$249.7K
MIRABELLA FINANCIAL SERVICES LLP4,296 sh	4,296	$245.0K
INDEPENDENT FINANCIAL GROUP3,965 sh	3,965	$226.1K
HighTower Advisors3,611 sh	3,611	$205.9K
GROUP ONE TRADING, L.P.500 sh	500	$28.5K
Advisory Services Network367 sh	367	$20.9K
TWIN PEAKS WEALTH ADVISORS110 sh	110	$6.3K
Rachor Investment Advisory Services74 sh	74	$4.2K
Sound Income Strategies51 sh	51	$3.0K
MAI Capital Management12 sh	12	$685.00
Annis Gardner Whiting Capital Advisors7 sh	7	$400.00
Root Financial Partners7 sh	7	$399.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.