NEW YORK, NY
PROTARA THERAPEUTICS, INC.TARA— Latest position per institution from SEC 13F filings
15
Institutional holders
38.85M
Total shares held
200.72M
Estimated value
1.94M
Avg. position size
JANUS HENDERSON GROUP PLC
CIK 1274173
Shares
5.21M
Value
27.15M
Filed
Mar 31, 2026
BLACKROCK, INC.
CIK 2012383
Shares
3.39M
Value
17.69M
Filed
Mar 31, 2026
VELAN CAPITAL INVESTMENT MANAGEMENT LP
CIK 1848809
Shares
2.83M
Value
14.77M
Filed
Mar 31, 2026
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
2.83M
Value
14.75M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
2.39M
Value
12.75M
Filed
Dec 31, 2025
BLACKSTONE INC.
CIK 1393818
Shares
2.27M
Value
11.80M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.12M
Value
11.04M
Filed
Mar 31, 2026
SIO CAPITAL MANAGEMENT, LLC
CIK 1482416
Shares
1.97M
Value
10.26M
Filed
Mar 31, 2026
ACORN CAPITAL ADVISORS, LLC
CIK 2054410
Shares
1.75M
Value
9.13M
Filed
Mar 31, 2026
INTEGRAL HEALTH ASSET MANAGEMENT, LLC
CIK 1773206
Shares
1.75M
Value
9.12M
Filed
Mar 31, 2026
AIGH CAPITAL MANAGEMENT LLC
CIK 1835943
Shares
1.62M
Value
8.45M
Filed
Mar 31, 2026
UBS GROUP AG
CIK 1610520
Shares
1.40M
Value
7.31M
Filed
Mar 31, 2026
5AM VENTURE MANAGEMENT, LLC
CIK 1799883
Shares
1.37M
Value
7.14M
Filed
Mar 31, 2026
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 938206
Shares
1.26M
Value
6.71M
Filed
Dec 31, 2025
CITADEL ADVISORS LLC
CIK 1423053
Shares
1.23M
Value
6.42M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.18M
Value
6.13M
Filed
Mar 31, 2026
POINT72 ASSET MANAGEMENT, L.P.
CIK 1603466
Shares
1.15M
Value
6.01M
Filed
Mar 31, 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 1165408
Shares
1.04M
Value
5.56M
Filed
Dec 31, 2025
RA CAPITAL MANAGEMENT, L.P.
CIK 1346824
Shares
1.04M
Value
3.15M
Filed
Jun 30, 2025
PATIENT SQUARE CAPITAL LP
CIK 1819257
Shares
1.03M
Value
5.37M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | JANUS HENDERSON GROUP PLC | 1274173 | 5.21M | 27.15M | Mar 31, 2026 |
| 2 | BLACKROCK, INC. | 2012383 | 3.39M | 17.69M | Mar 31, 2026 |
| 3 | VELAN CAPITAL INVESTMENT MANAGEMENT LP | 1848809 | 2.83M | 14.77M | Mar 31, 2026 |
| 4 | MILLENNIUM MANAGEMENT LLC | 1273087 | 2.83M | 14.75M | Mar 31, 2026 |
| 5 | VANGUARD GROUP INC | 102909 | 2.39M | 12.75M | Dec 31, 2025 |
| 6 | BLACKSTONE INC. | 1393818 | 2.27M | 11.80M | Mar 31, 2026 |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.12M | 11.04M | Mar 31, 2026 |
| 8 | SIO CAPITAL MANAGEMENT, LLC | 1482416 | 1.97M | 10.26M | Mar 31, 2026 |
| 9 | ACORN CAPITAL ADVISORS, LLC | 2054410 | 1.75M | 9.13M | Mar 31, 2026 |
| 10 | INTEGRAL HEALTH ASSET MANAGEMENT, LLC | 1773206 | 1.75M | 9.12M | Mar 31, 2026 |
| 11 | AIGH CAPITAL MANAGEMENT LLC | 1835943 | 1.62M | 8.45M | Mar 31, 2026 |
| 12 | UBS GROUP AG | 1610520 | 1.40M | 7.31M | Mar 31, 2026 |
| 13 | 5AM VENTURE MANAGEMENT, LLC | 1799883 | 1.37M | 7.14M | Mar 31, 2026 |
| 14 | DRIEHAUS CAPITAL MANAGEMENT LLC | 938206 | 1.26M | 6.71M | Dec 31, 2025 |
| 15 | CITADEL ADVISORS LLC | 1423053 | 1.23M | 6.42M | Mar 31, 2026 |
| 16 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.18M | 6.13M | Mar 31, 2026 |
| 17 | POINT72 ASSET MANAGEMENT, L.P. | 1603466 | 1.15M | 6.01M | Mar 31, 2026 |
| 18 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 1165408 | 1.04M | 5.56M | Dec 31, 2025 |
| 19 | RA CAPITAL MANAGEMENT, L.P. | 1346824 | 1.04M | 3.15M | Jun 30, 2025 |
| 20 | PATIENT SQUARE CAPITAL LP | 1819257 | 1.03M | 5.37M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.