Protolabs
PRLB
234 hedge funds and large institutions have $1.1B invested in Protolabs in 2025 Q4 according to their latest regulatory filings, with 44 funds opening new positions, 78 increasing their positions, 72 reducing their positions, and 22 closing their positions.
540% more call options, than puts
Call options by funds: $2.2M | Put options by funds: $344K
100% more first-time investments, than exits
New positions opened: 44 | Existing positions closed: 22
10% more funds holding
Funds holding: 213 → 234 (+21)
8% more repeat investments, than reductions
Existing positions increased: 78 | Existing positions reduced: 72
1% more capital invested
Capital invested by funds: $1.09B → $1.1B (+$13.7M)
0.85% more ownership
Funds ownership: 91.08% → 91.93% (+0.85%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
DCM
Driehaus Capital Management
Chicago,
Illinois
|
+$19.5M |
| 2 |
ACM
American Capital Management
New York
|
+$18M |
| 3 |
Prudential Financial
Newark,
New Jersey
|
+$5.39M |
| 4 |
DGI
Disciplined Growth Investors
Minneapolis,
Minnesota
|
+$4.16M |
| 5 |
Jane Street
New York
|
+$2.33M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
D.E. Shaw & Co
New York
|
-$7.38M |
| 2 |
Deutsche Bank
Frankfurt Am Main Ge,
Germany
|
-$5.86M |
| 3 |
SCM
SG Capital Management
Chicago,
Illinois
|
-$5.68M |
| 4 |
EF
Empowered Funds
Havertown,
Pennsylvania
|
-$5.43M |
| 5 |
State Street
Boston,
Massachusetts
|
-$4.45M |
PRLB Hedge Fund Activity: Q4 2025 in Review
234 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in Protolabs (PRLB) for Q4 2025, worth a combined $1.1B — up 1.3% from $1.09B a quarter earlier.
Buyers outnumbered sellers: 44 funds opened new PRLB positions and 22 closed out — a net gain of 22 holders — while 78 added to existing stakes and 72 trimmed.
The largest buyer was Driehaus Capital Management, opening a new position worth an estimated $19.5M. The largest seller was D.E. Shaw & Co, cutting an estimated $7.38M.
- 234 institutional investors held Protolabs (PRLB) as of Q4 2025, up from 213 in Q3 2025.
- Funds reported $1.1B of Protolabs stock for Q4 2025, up 1.3% quarter-over-quarter.
- 44 funds opened new Protolabs positions in Q4 2025 and 22 closed out, a net change of +22 holders.
- The largest Protolabs buyer in Q4 2025 was Driehaus Capital Management, an estimated $19.5M added.
- The largest Protolabs seller in Q4 2025 was D.E. Shaw & Co, an estimated $7.38M sold.
Based on aggregated 13F filings for Q4 2025.