Protolabs
PRLB
213 hedge funds and large institutions have $1.09B invested in Protolabs in 2025 Q3 according to their latest regulatory filings, with 34 funds opening new positions, 66 increasing their positions, 75 reducing their positions, and 22 closing their positions.
460% more call options, than puts
Call options by funds: $1.79M | Put options by funds: $320K
55% more first-time investments, than exits
New positions opened: 34 | Existing positions closed: 22
26% more capital invested
Capital invested by funds: $866M → $1.09B (+$221M)
6% more funds holding
Funds holding: 201 → 213 (+12)
0.05% more ownership
Funds ownership: 91.03% → 91.08% (+0.05%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
12% less repeat investments, than reductions
Existing positions increased: 66 | Existing positions reduced: 75
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
ACM
American Capital Management
New York
|
+$10.3M |
| 2 |
N
Nuveen
Charlotte,
North Carolina
|
+$6.79M |
| 3 |
PAMP
Polar Asset Management Partners
Toronto,
Ontario, Canada
|
+$5.89M |
| 4 |
SCM
SG Capital Management
Chicago,
Illinois
|
+$5.2M |
| 5 |
RCMNY
Rubric Capital Management (New York)
New York
|
+$4.09M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Hotchkis & Wiley Capital Management
Los Angeles,
California
|
-$6.63M |
| 2 |
DGI
Disciplined Growth Investors
Minneapolis,
Minnesota
|
-$5.94M |
| 3 |
Morgan Stanley
New York
|
-$4.91M |
| 4 |
Pacer Advisors
Malvern,
Pennsylvania
|
-$4.48M |
| 5 |
D.E. Shaw & Co
New York
|
-$4.38M |
PRLB Hedge Fund Activity: Q3 2025 in Review
213 of the 7,620 institutional investors tracked by Wall St. Rank reported a position in Protolabs (PRLB) for Q3 2025, worth a combined $1.09B — up 26% from $866M a quarter earlier.
Buyers outnumbered sellers: 34 funds opened new PRLB positions and 22 closed out — a net gain of 12 holders — while 66 added to existing stakes and 75 trimmed.
The largest buyer was American Capital Management, adding an estimated $10.3M. The largest seller was Hotchkis & Wiley Capital Management, exiting entirely with an estimated $6.63M sold.
- 213 institutional investors held Protolabs (PRLB) as of Q3 2025, up from 201 in Q2 2025.
- Funds reported $1.09B of Protolabs stock for Q3 2025, up 26% quarter-over-quarter.
- 34 funds opened new Protolabs positions in Q3 2025 and 22 closed out, a net change of +12 holders.
- The largest Protolabs buyer in Q3 2025 was American Capital Management, an estimated $10.3M added.
- The largest Protolabs seller in Q3 2025 was Hotchkis & Wiley Capital Management, an estimated $6.63M sold.
Based on aggregated 13F filings for Q3 2025.