CAMBRIDGE, MA
FORRESTER RESEARCH, INC.FORR— Latest position per institution from SEC 13F filings
15
Institutional holders
11.64M
Total shares held
82.33M
Estimated value
582.14K
Avg. position size
PORTOLAN CAPITAL MANAGEMENT, LLC
CIK 1350290
Shares
1.54M
Value
8.72M
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
933.57K
Value
15.95M
Filed
Jun 30, 2024
BLACKROCK, INC.
CIK 2012383
Shares
907.38K
Value
5.14M
Filed
Mar 31, 2026
FIRST MANHATTAN CO. LLC.
CIK 728083
Shares
750K
Value
4.25M
Filed
Mar 31, 2026
PACIFIC RIDGE CAPITAL PARTNERS, LLC
CIK 1591546
Shares
710.85K
Value
4.02M
Filed
Mar 31, 2026
NANTAHALA CAPITAL MANAGEMENT, LLC
CIK 1472322
Shares
694.42K
Value
3.93M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
659.06K
Value
5.35M
Filed
Dec 31, 2025
TIETON CAPITAL MANAGEMENT, LLC
CIK 1381954
Shares
559.04K
Value
3.16K
Filed
Mar 31, 2026
KENT LAKE CAPITAL LLC
CIK 1777141
Shares
532.15K
Value
11.47M
Filed
Mar 31, 2024
CAPTION MANAGEMENT, LLC
CIK 1706766
Shares
504.83K
Value
4.10M
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
486.92K
Value
2.76M
Filed
Mar 31, 2026
ARROWMARK COLORADO HOLDINGS LLC
CIK 1483859
Shares
472.95K
Value
2.68M
Filed
Mar 31, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
436.71K
Value
2.47M
Filed
Mar 31, 2026
ACADIAN ASSET MANAGEMENT LLC
CIK 916542
Shares
423.34K
Value
2.39K
Filed
Mar 31, 2026
CLEAR STREET GROUP INC.
CIK 1881567
Shares
389.84K
Value
2.21M
Filed
Mar 31, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
389.25K
Value
2.20M
Filed
Mar 31, 2026
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC
CIK 1164833
Shares
383.59K
Value
2.17M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
316.79K
Value
1.79M
Filed
Mar 31, 2026
SEI INVESTMENTS CO
CIK 350894
Shares
284.42K
Value
1.61M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
266.39K
Value
1.51M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | PORTOLAN CAPITAL MANAGEMENT, LLC | 1350290 | 1.54M | 8.72M | Mar 31, 2026 |
| 2 | BLACKROCK FINANCE, INC. | 1364742 | 933.57K | 15.95M | Jun 30, 2024 |
| 3 | BLACKROCK, INC. | 2012383 | 907.38K | 5.14M | Mar 31, 2026 |
| 4 | FIRST MANHATTAN CO. LLC. | 728083 | 750K | 4.25M | Mar 31, 2026 |
| 5 | PACIFIC RIDGE CAPITAL PARTNERS, LLC | 1591546 | 710.85K | 4.02M | Mar 31, 2026 |
| 6 | NANTAHALA CAPITAL MANAGEMENT, LLC | 1472322 | 694.42K | 3.93M | Mar 31, 2026 |
| 7 | VANGUARD GROUP INC | 102909 | 659.06K | 5.35M | Dec 31, 2025 |
| 8 | TIETON CAPITAL MANAGEMENT, LLC | 1381954 | 559.04K | 3.16K | Mar 31, 2026 |
| 9 | KENT LAKE CAPITAL LLC | 1777141 | 532.15K | 11.47M | Mar 31, 2024 |
| 10 | CAPTION MANAGEMENT, LLC | 1706766 | 504.83K | 4.10M | Dec 31, 2025 |
| 11 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 486.92K | 2.76M | Mar 31, 2026 |
| 12 | ARROWMARK COLORADO HOLDINGS LLC | 1483859 | 472.95K | 2.68M | Mar 31, 2026 |
| 13 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 436.71K | 2.47M | Mar 31, 2026 |
| 14 | ACADIAN ASSET MANAGEMENT LLC | 916542 | 423.34K | 2.39K | Mar 31, 2026 |
| 15 | CLEAR STREET GROUP INC. | 1881567 | 389.84K | 2.21M | Mar 31, 2026 |
| 16 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 389.25K | 2.20M | Mar 31, 2026 |
| 17 | HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 1164833 | 383.59K | 2.17M | Mar 31, 2026 |
| 18 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 316.79K | 1.79M | Mar 31, 2026 |
| 19 | SEI INVESTMENTS CO | 350894 | 284.42K | 1.61M | Mar 31, 2026 |
| 20 | DIMENSIONAL FUND ADVISORS LP | 354204 | 266.39K | 1.51M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.