PROTO LABS INC (PRLB) Institutional Shareholders
PROTO LABS INC (PRLB) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $1.82B in PRLB holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of PRLB tracked by InsiderSet, reporting ownership valued at approximately $317.58M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $324.32M, representing an estimated gain of +2.12% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 60% of the total disclosed PRLB value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Disciplined Growth Investors, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in PROTO LABS INC (PRLB).
This page ranks the largest institutional PRLB shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
268
Total Reported Value
$1.82B
Largest Holder
Blackrock, Inc.
Largest Position
$317.58M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
58
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 3,896,222 | $317,581,055 | $324,321,519 | +$6,740,464 | +2.12% | |
| Disciplined Growth Investors | Fred Martin | 3.29% | 2,380,514 | $194,035,737 | $198,153,985 | +$4,118,248 | +2.12% |
| Vanguard Portfolio Management Llc | 0.01% | 1,599,765 | $130,396,845 | $133,164,439 | +$2,767,594 | +2.12% | |
| Dimensional Fund Advisors Lp | 0.02% | 1,152,305 | $93,921,327 | $95,917,868 | +$1,996,541 | +2.13% | |
| State Street Corp | 0.00% | 1,138,462 | $92,796,038 | $94,765,577 | +$1,969,539 | +2.12% | |
| Vanguard Capital Management Llc | 0.00% | 1,054,623 | $85,962,321 | $87,786,819 | +$1,824,498 | +2.12% | |
| American Capital Management Inc | 2.27% | 619,845 | $50,523,566 | $51,595,898 | +$1,072,332 | +2.12% | |
| Geode Capital Management, Llc | 0.00% | 614,028 | $50,059,895 | $51,111,691 | +$1,051,796 | +2.10% | |
| Renaissance Technologies LLC | Jim Simons | 0.05% | 469,251 | $38,248,649 | $39,060,453 | +$811,804 | +2.12% |
| Prudential Financial Inc | 0.04% | 457,810 | $37,316,093 | $38,108,104 | +$792,011 | +2.12% | |
| Fmr Llc | 0.00% | 442,659 | $36,081,151 | $36,846,935 | +$765,784 | +2.12% | |
| Arrowstreet Capital, Limited Partnership | 0.02% | 440,816 | $35,930,912 | $36,693,524 | +$762,612 | +2.12% | |
| Nuveen, Llc | 0.01% | 420,059 | $34,239,010 | $34,965,711 | +$726,701 | +2.12% | |
| Goldman Sachs Group Inc | 0.00% | 403,179 | $32,863,120 | $33,560,620 | +$697,500 | +2.12% | |
| Driehaus Capital Management Llc | 0.17% | 370,151 | $30,171,008 | $30,811,369 | +$640,361 | +2.12% | |
| Charles Schwab Investment Management Inc | 0.00% | 354,188 | $28,869,864 | $29,482,609 | +$612,745 | +2.12% | |
| Morgan Stanley | 0.00% | 314,778 | $25,657,634 | $26,202,121 | +$544,487 | +2.12% | |
| S Squared Technology, Llc | 7.29% | 288,120 | $23,484,661 | $23,983,109 | +$498,448 | +2.12% | |
| Northern Trust Corp | 0.00% | 284,562 | $23,194,648 | $23,686,941 | +$492,293 | +2.12% | |
| First Trust Advisors Lp | 0.01% | 224,792 | $18,322,795 | $18,711,686 | +$388,891 | +2.12% | |
| Jpmorgan Chase & Co | 0.00% | 224,717 | $17,930,209 | $18,705,443 | +$775,234 | +4.32% | |
| D. E. Shaw & Co., Inc. | 0.01% | 211,366 | $17,228,443 | $17,594,106 | +$365,663 | +2.12% | |
| Nordea Investment Management Ab | 0.01% | 203,883 | $16,506,368 | $16,971,221 | +$464,853 | +2.82% | |
| Hillsdale Investment Management Inc. | 0.36% | 191,594 | $15,616,827 | $15,948,285 | +$331,458 | +2.12% | |
| Jupiter Asset Management Ltd | 0.08% | 188,539 | $15,367,814 | $15,693,986 | +$326,172 | +2.12% | |
| Panagora Asset Management Inc | 0.05% | 180,713 | $14,729,917 | $15,042,550 | +$312,633 | +2.12% | |
| Vanguard Fiduciary Trust Co | 0.00% | 157,987 | $12,877,520 | $13,150,838 | +$273,318 | +2.12% | |
| Bank Of New York Mellon Corp | 0.00% | 143,782 | $11,719,712 | $11,968,414 | +$248,702 | +2.12% | |
| Jane Street Group, Llc | 0.01% | 143,527 | $11,698,886 | $11,947,187 | +$248,301 | +2.12% | |
| Principal Financial Group Inc | 0.01% | 135,136 | $11,014,935 | $11,248,721 | +$233,786 | +2.12% | |
| Bank Of America Corp | 0.00% | 125,997 | $10,270,017 | $10,487,990 | +$217,973 | +2.12% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.02% | 120,473 | $9,819,754 | $10,028,173 | +$208,419 | +2.12% | |
| Gagnon Securities Llc | 1.83% | 116,283 | $9,478,227 | $9,679,397 | +$201,170 | +2.12% | |
| Rice Hall James & Associates, Llc | 0.43% | 108,964 | $8,881,656 | $9,070,163 | +$188,507 | +2.12% | |
| Rubric Capital Management Lp | 0.08% | 108,692 | $8,859,485 | $9,047,522 | +$188,037 | +2.12% | |
| Invesco Ltd. | 0.00% | 108,421 | $8,837,396 | $9,024,964 | +$187,568 | +2.12% | |
| Acadian Asset Management Llc | 0.01% | 99,186 | $8,076,000 | $8,256,243 | +$180,243 | +2.23% | |
| Ubs Group Ag | 0.00% | 97,304 | $7,931,249 | $8,099,585 | +$168,336 | +2.12% | |
| Public Sector Pension Investment Board | 0.02% | 95,645 | $7,796,024 | $7,961,490 | +$165,466 | +2.12% | |
| Millennium Management Llc | 0.01% | 92,960 | $7,577,170 | $7,737,990 | +$160,820 | +2.12% | |
| Citadel Advisors Llc | 0.00% | 88,625 | $7,223,824 | $7,377,145 | +$153,321 | +2.12% | |
| American Century Companies Inc | 0.00% | 79,056 | $6,443,854 | $6,580,621 | +$136,767 | +2.12% | |
| Ameriprise Financial Inc | 0.00% | 69,786 | $5,688,257 | $5,808,987 | +$120,730 | +2.12% | |
| Edgestream Partners, L.P. | 0.16% | 65,799 | $5,363,276 | $5,477,109 | +$113,833 | +2.12% | |
| Informed Momentum Co Llc | 0.47% | 64,803 | $5,282,093 | $5,394,202 | +$112,109 | +2.12% | |
| Rhumbline Advisers | 0.00% | 57,970 | $4,725,116 | $4,825,423 | +$100,307 | +2.12% | |
| Legal & General Group Plc | 0.00% | 56,739 | $4,624,796 | $4,722,954 | +$98,158 | +2.12% | |
| Roubaix Capital, Llc | 1.62% | 55,415 | $4,516,877 | $4,612,745 | +$95,868 | +2.12% | |
| Aqr Capital Management Llc | 0.00% | 53,308 | $4,345,136 | $4,437,358 | +$92,222 | +2.12% | |
| Zacks Investment Management | 0.03% | 52,989 | $4,319,217 | $4,410,804 | +$91,587 | +2.12% |
Frequently asked questions about PRLB
Who owns the most PRLB stock?
The largest holders of PRLB are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for PROTO LABS INC (PRLB).
Is PRLB widely held by superinvestors?
Many widely followed stocks like PRLB appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly PRLB is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.