WALTHAM, MA
OPTIMIZERX CORPOPRX— Latest position per institution from SEC 13F filings
15
Institutional holders
14.95M
Total shares held
122.34M
Estimated value
747.29K
Avg. position size
FIRST LIGHT ASSET MANAGEMENT, LLC
CIK 1600004
Shares
1.81M
Value
13.99M
Filed
Sep 30, 2024
WHETSTONE CAPITAL ADVISORS, LLC
CIK 1607278
Shares
1.51M
Value
8.63M
Filed
Jun 30, 2026
DIVISADERO STREET CAPITAL MANAGEMENT, LP
CIK 1901865
Shares
1.32M
Value
13.16M
Filed
Jun 30, 2024
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
1.18M
Value
11.75M
Filed
Jun 30, 2024
VANGUARD GROUP INC
CIK 102909
Shares
1.14M
Value
13.94M
Filed
Dec 31, 2025
ROYCE & ASSOCIATES LP
CIK 906304
Shares
1.09M
Value
6.23M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
699.60K
Value
4M
Filed
Jun 30, 2026
KENNEDY CAPITAL MANAGEMENT LLC
CIK 884589
Shares
644.15K
Value
3.68M
Filed
Jun 30, 2026
RICE HALL JAMES & ASSOCIATES, LLC
CIK 1230765
Shares
633.84K
Value
3.63M
Filed
Jun 30, 2026
BLAIR WILLIAM & CO/IL
CIK 902367
Shares
607.92K
Value
3.48M
Filed
Jun 30, 2026
AQR CAPITAL MANAGEMENT LLC
CIK 1167557
Shares
583.96K
Value
3.34M
Filed
Jun 30, 2026
NEXT CENTURY GROWTH INVESTORS LLC
CIK 1134007
Shares
505.41K
Value
6.20M
Filed
Dec 31, 2025
CASDIN CAPITAL, LLC
CIK 1534261
Shares
500K
Value
7.32M
Filed
Mar 31, 2023
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
477.69K
Value
2.73M
Filed
Jun 30, 2026
WASATCH ADVISORS LP
CIK 814133
Shares
458.64K
Value
6.55M
Filed
Jun 30, 2023
BLACKROCK, INC.
CIK 2012383
Shares
445.38K
Value
2.55M
Filed
Jun 30, 2026
JACOB ASSET MANAGEMENT OF NEW YORK LLC
CIK 1279256
Shares
370.33K
Value
2.88M
Filed
Sep 30, 2023
PARKMAN HEALTHCARE PARTNERS LLC
CIK 1777015
Shares
350.35K
Value
2M
Filed
Jun 30, 2026
SAMJO CAPITAL LLC
CIK 1509943
Shares
316.60K
Value
2.46M
Filed
Sep 30, 2023
CREDIT SUISSE AG/
CIK 824468
Shares
314.47K
Value
3.82M
Filed
Mar 31, 2024
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | FIRST LIGHT ASSET MANAGEMENT, LLC | 1600004 | 1.81M | 13.99M | Sep 30, 2024 |
| 2 | WHETSTONE CAPITAL ADVISORS, LLC | 1607278 | 1.51M | 8.63M | Jun 30, 2026 |
| 3 | DIVISADERO STREET CAPITAL MANAGEMENT, LP | 1901865 | 1.32M | 13.16M | Jun 30, 2024 |
| 4 | BLACKROCK FINANCE, INC. | 1364742 | 1.18M | 11.75M | Jun 30, 2024 |
| 5 | VANGUARD GROUP INC | 102909 | 1.14M | 13.94M | Dec 31, 2025 |
| 6 | ROYCE & ASSOCIATES LP | 906304 | 1.09M | 6.23M | Jun 30, 2026 |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 699.60K | 4M | Jun 30, 2026 |
| 8 | KENNEDY CAPITAL MANAGEMENT LLC | 884589 | 644.15K | 3.68M | Jun 30, 2026 |
| 9 | RICE HALL JAMES & ASSOCIATES, LLC | 1230765 | 633.84K | 3.63M | Jun 30, 2026 |
| 10 | BLAIR WILLIAM & CO/IL | 902367 | 607.92K | 3.48M | Jun 30, 2026 |
| 11 | AQR CAPITAL MANAGEMENT LLC | 1167557 | 583.96K | 3.34M | Jun 30, 2026 |
| 12 | NEXT CENTURY GROWTH INVESTORS LLC | 1134007 | 505.41K | 6.20M | Dec 31, 2025 |
| 13 | CASDIN CAPITAL, LLC | 1534261 | 500K | 7.32M | Mar 31, 2023 |
| 14 | DIMENSIONAL FUND ADVISORS LP | 354204 | 477.69K | 2.73M | Jun 30, 2026 |
| 15 | WASATCH ADVISORS LP | 814133 | 458.64K | 6.55M | Jun 30, 2023 |
| 16 | BLACKROCK, INC. | 2012383 | 445.38K | 2.55M | Jun 30, 2026 |
| 17 | JACOB ASSET MANAGEMENT OF NEW YORK LLC | 1279256 | 370.33K | 2.88M | Sep 30, 2023 |
| 18 | PARKMAN HEALTHCARE PARTNERS LLC | 1777015 | 350.35K | 2M | Jun 30, 2026 |
| 19 | SAMJO CAPITAL LLC | 1509943 | 316.60K | 2.46M | Sep 30, 2023 |
| 20 | CREDIT SUISSE AG/ | 824468 | 314.47K | 3.82M | Mar 31, 2024 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.