Login
Super Investors SUPERSTRING CAPITAL MANAGEMENT LP
SC

SUPERSTRING CAPITAL MANAGEMENT LP

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$158M
Positions
32
Quarter ended
June 30, 2026
Filed
August 14, 2026

Reported portfolio value by quarter (11 quarters reported)

$187M $79.3M
Q4 23 Q3 24 Q2 25 Q1 26 Q2 26

$140M in Q4 2023 → $158M now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Cogent Biosciences Inc 8.4% Added 52% 343,284 $13.3M
Axsome Therapeutics Inc. 8.3% Added 381% 53,916 $13.2M
Genmab A/s 7.5% Added 119% 430,600 $11.8M
CT Celldex Therapeutics Inc New 6.8% Added 60% 287,583 $10.7M
Trevi Therapeutics Inc 6.2% Added 108% 524,224 $9.78M
Revolution Medicines Inc 6.0% New 51,053 $9.56M
Definium Therapeutics Inc 5.6% Trimmed 46% 188,282 $8.86M
Vir Biotechnology Inc 5.5% Added 17% 853,685 $8.7M
Immunovant Inc 5.1% Trimmed 42% 208,368 $8.03M
Urogen Pharma Ltd 4.4% Trimmed 51% 191,313 $7.04M
Climb Bio Inc 4.3% Added 162% 521,082 $6.79M
AN Adlai Nortye Ltd 4.0% Added 33% 552,501 $6.35M
Savara Inc 3.8% Trimmed 38% 977,460 $6.02M
Maplight Therapeutics Inc 2.8% Trimmed 35% 125,432 $4.5M
Oric Pharmaceuticals Inc 2.8% Added 252% 406,077 $4.4M
UT United Therapeutics Corp Del 2.5% Added 38% 7,172 $3.89M
Vaxcyte Inc 2.5% Trimmed 40% 66,793 $3.88M
BM Beone Medicines Ltd 2.2% New 12,273 $3.5M
Cabaletta Bio Inc 2.2% Added 20% 1,278,652 $3.48M
Zai Lab Ltd 1.9% Trimmed 44% 155,813 $2.96M
Sionna Therapeutics Inc 1.8% Trimmed 55% 63,156 $2.78M
Bright Minds Biosciences Inc 1.3% Added 129% 30,456 $2.14M
Aclaris Therapeutics Inc 0.9% Trimmed 30% 257,675 $1.36M
Cybin Inc 0.9% New 204,424 $1.35M
KP Kiniksa Pharmaceuticals Intl 0.8% New 18,867 $1.21M
Roivant Sciences Ltd 0.6% New 25,623 $907K
TP Tonix Pharmaceuticals Hldg C 0.5% Added 0.2% 63,648 $812K
Protara Therapeutics Inc 0.3% Unchanged 121,457 $464K
Faeth Therapeutics Inc 0.2% New 14,175 $354K
Boundless Bio Inc 0.1% New 55,356 $138K
Biomea Fusion Inc 0.1% Unchanged 250,000 $85.3K
VT Vyne Therapeutics Inc 0.0% New 61,269 $39.9K

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
Summit Therapeutics Inc Exited −892,873 −$16.9M —
Axsome Therapeutics Inc. Added +42,699 +$10.5M 8.3%
Revolution Medicines Inc New +51,053 +$9.56M 6.0%
Definium Therapeutics Inc Trimmed −163,179 −$7.68M 5.6%
Urogen Pharma Ltd Trimmed −196,058 −$7.21M 4.4%
Genmab A/s Added +233,891 +$6.42M 7.5%
Immunovant Inc Trimmed −149,238 −$5.75M 5.1%
Trevi Therapeutics Inc Added +272,658 +$5.09M 6.2%
Vertex Pharmaceuticals Inc Exited −11,010 −$4.92M —
Cogent Biosciences Inc Added +118,126 +$4.57M 8.4%

Showing the 10 largest of 41 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 14, 2026

Company Action Shares changed Value of change % of portfolio
Cidara Therapeutics Inc Exited −85,098 −$18.8M —
Terns Pharmaceuticals Inc Exited −443,777 −$17.9M —
Summit Therapeutics Inc New +892,873 +$16.9M 12.1%
Dynavax Technologies Corp Exited −525,592 −$8.08M —
Definium Therapeutics Inc New +351,461 +$6.64M 4.7%
Vir Biotechnology Inc New +730,548 +$6.55M 4.7%
Vaxcyte Inc New +110,454 +$6.42M 4.6%
Urogen Pharma Ltd Trimmed −330,983 −$5.95M 5.0%
MM Mind Medicine Mindmed Inc Exited −425,202 −$5.69M —
Cogent Biosciences Inc Trimmed −141,080 −$5.43M 6.2%

Showing the 10 largest of 59 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 17, 2026

Company Action Shares changed Value of change % of portfolio
Urogen Pharma Ltd Added +630,442 +$14.8M 9.0%
Terns Pharmaceuticals Inc Trimmed −345,869 −$14M 9.6%
Dynavax Technologies Corp New +525,592 +$8.08M 4.3%
Sionna Therapeutics Inc New +180,593 +$7.43M 4.0%
Axsome Therapeutics Inc New +37,433 +$6.84M 3.7%
MM Mind Medicine Mindmed Inc New +425,202 +$5.69M 3.0%
89bio Inc Exited −384,652 −$5.65M —
Taysha Gene Therapies Inc New +980,768 +$5.39M 2.9%
Jazz Pharmaceuticals PLC Exited −40,893 −$5.39M —
Ocular Therapeutix Inc New +418,080 +$5.08M 2.7%

Showing the 10 largest of 61 changes.

Q3 2025

quarter ended September 30, 2025 · filed November 14, 2025

Company Action Shares changed Value of change % of portfolio
Cogent Biosciences Inc Trimmed −601,543 −$8.64M 5.1%
Cidara Therapeutics Inc New +68,463 +$6.56M 6.5%
Verona Pharma PLC Exited −68,982 −$6.52M —
Immunovant Inc New +341,348 +$5.5M 5.4%
Travere Therapeutics Inc Trimmed −222,847 −$5.33M 1.3%
Neurocrine Biosciences Inc Exited −40,608 −$5.1M —
UP Ultragenyx Pharmaceutical In Exited −130,422 −$4.74M —
Soleno Therapeutics Inc Exited −50,000 −$4.19M —
Summit Therapeutics Inc New +197,253 +$4.08M 4.0%
Ionis Pharmaceuticals Inc Exited −98,267 −$3.88M —

Showing the 10 largest of 48 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 14, 2025

Company Action Shares changed Value of change % of portfolio
Zai Lab Ltd Trimmed −160,052 −$5.6M 5.6%
Legend Biotech Corp Exited −160,442 −$5.44M —
Neurocrine Biosciences Inc New +40,608 +$5.1M 6.0%
Pfizer Inc Exited −196,164 −$4.97M —
Oric Pharmaceuticals Inc Trimmed −474,272 −$4.81M 4.1%
UP Ultragenyx Pharmaceutical In New +130,422 +$4.74M 5.6%
Jazz Pharmaceuticals PLC New +44,107 +$4.68M 5.5%
Urogen Pharma Ltd Trimmed −335,720 −$4.6M 1.4%
Soleno Therapeutics Inc New +50,000 +$4.19M 5.0%
Ionis Pharmaceuticals Inc New +98,267 +$3.88M 4.6%

Showing the 10 largest of 44 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 15, 2025

Company Action Shares changed Value of change % of portfolio
Novocure Ltd Exited −286,970 −$8.55M —
Verona Pharma PLC New +96,821 +$6.15M 7.3%
Structure Therapeutics Inc Exited −216,811 −$5.88M —
Ideaya Biosciences Inc Exited −227,102 −$5.84M —
Pfizer Inc New +196,164 +$4.97M 5.9%
Travere Therapeutics Inc New +237,487 +$4.26M 5.1%
Oric Pharmaceuticals Inc Trimmed −761,551 −$4.25M 5.4%
Zai Lab Ltd Trimmed −108,683 −$3.93M 12.7%
Legend Biotech Corp Added +90,848 +$3.08M 6.5%
Instil Bio Inc Exited −148,017 −$2.83M —

Showing the 10 largest of 49 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 14, 2025

Company Action Shares changed Value of change % of portfolio
Cogent Biosciences Inc New +910,865 +$7.1M 6.2%
Zai Lab Ltd Trimmed −223,302 −$5.85M 9.2%
Ideaya Biosciences Inc New +227,102 +$5.84M 5.1%
Oric Pharmaceuticals Inc Added +631,223 +$5.09M 11.0%
Cytokinetics Inc Trimmed −86,409 −$4.06M 5.3%
Capricor Therapeutics Inc Trimmed −282,118 −$3.89M 0.7%
Terns Pharmaceuticals Inc Added +672,016 +$3.72M 9.7%
89bio Inc Trimmed −462,221 −$3.61M 0.9%
Nkarta Inc Exited −740,294 −$3.35M —
Urogen Pharma Ltd New +301,206 +$3.21M 2.8%

Showing the 10 largest of 48 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 14, 2024

Company Action Shares changed Value of change % of portfolio
Structure Therapeutics Inc New +227,047 +$9.97M 8.7%
Zai Lab Ltd Added +411,754 +$9.94M 13.2%
Oric Pharmaceuticals Inc New +949,522 +$9.73M 8.5%
Instil Bio Inc New +107,545 +$7.24M 6.3%
Capricor Therapeutics Inc New +337,347 +$5.13M 4.5%
Novocure Ltd Added +325,819 +$5.09M 5.4%
Legend Biotech Corp Trimmed −94,150 −$4.59M 2.6%
Tango Therapeutics Inc Added +483,477 +$3.72M 4.0%
Keros Therapeutics Inc Exited −74,288 −$3.39M —
Fate Therapeutics Inc Added +969,574 +$3.39M 4.5%

Showing the 10 largest of 45 changes.

Create Account

Sign up for free to unlock this feature.

Already have an account? Sign in

Premium Feature

This feature requires a premium subscription to unlock unlimited historical data and advanced analysis tools.

Premium includes:

  • Unlimited historical financial data
  • Advanced analytics and insights
  • Priority support