SC
Superstring Capital Management LP 13F Filing (Q2 2026) — Top Positions & Stock Picks
Superstring Capital Management LPCIK: 0001931118
Sector-focusedMomentum followerHigh-turnover trader
Total reported value
$158.4M
Reporting period: 2026-06-30 · Number of holdings: 32
SUPERSTRING CAPITAL MANAGEMENT LP disclosed 32 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $158.4M and a quarterly turnover rate of 82.5%.
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Personality snowflake
- Concentration
- 20.81
- Portfolio Stability
- 82.53
- Momentum
- 100
- Sector conviction
- 100
- Diversification
- 64
- Sizing Uniformity
- 91.72
Superstring Capital Management LP's disclosed holdings carry a Herfindahl concentration index of 0.052 — mathematically equivalent to about 19 equally-sized positions, well below its 32 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.83), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 17% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govSold out SMMT
Add AXSM
+380.7% $11.3M
New buy RVMD
Add TRVI
+108.4% $6.8M
Add GMAB
+118.9% $6.6M
Sold out VRTX
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | COGT | Cogent Biosciences Inc | Stock-Other | 8.39% | +2.20% | +52.46% | |
| 2 | AXSM | Axsome Therapeutics Inc | Stock-Healthcare | 8.33% | +6.98% | +380.66% | |
| 3 | GMAB | Genmab A/s -sp Adr | Stock-Other | 7.47% | +3.70% | +118.90% | |
| 4 | CLDX | Celldex Therapeutics Inc | Stock-Other | 6.76% | +2.68% | +59.73% | |
| 5 | TRVI | Trevi Therapeutics Inc | Stock-Other | 6.17% | +4.03% | +108.38% | |
| 6 | RVMD | Revolution Medicines Inc | Stock-Healthcare | 6.04% | +6.04% | NEW | |
| 7 | DFTX | Definium Therapeutics Inc | Stock-Other | 5.59% | +0.84% | -46.43% | |
| 8 | VIR | Vir Biotechnology Inc | Stock-Other | 5.49% | +0.81% | +16.86% | |
| 9 | IMVT | Immunovant Inc | Stock-Other | 5.07% | -1.28% | -41.73% | |
| 10 | URGN | UroGen Pharma Ltd. | Stock-Other | 4.45% | -0.53% | -50.61% | |
| 11 | CLYM | Climb Bio Inc | Stock-Other | 4.29% | +3.32% | +161.58% | |
| 12 | ANL | Adlai Nortye Ltd-adr | Stock-Other | 4.01% | +1.96% | +33.18% | |
| 13 | SVRA | Savara Inc | Stock-Other | 3.80% | -2.39% | -38.37% | |
| 14 | MPLT | Maplight Therapeutics Inc | Stock-Other | 2.84% | +0.05% | -34.72% | |
| 15 | ORIC | Oric Pharmaceuticals Inc | Stock-Other | 2.78% | +1.74% | +252.39% | |
| 16 | UTHR | United Therapeutics CORP | Stock-Healthcare | 2.45% | +0.25% | +38.30% | |
| 17 | PCVX | Vaxcyte Inc | Stock-Other | 2.45% | -2.14% | -39.53% | |
| 18 | ONC | Beone Medicines Ltd-adr | Stock-Other | 2.21% | +2.21% | NEW | |
| 19 | CABA | Cabaletta Bio Inc | Stock-Other | 2.20% | +0.15% | +19.92% | |
| 20 | ZLAB | Zai Lab Ltd-adr | Stock-Other | 1.87% | -1.84% | -43.51% | |
| 21 | SION | Sionna Therapeutics Inc | Stock-Other | 1.75% | -2.29% | -55.22% | |
| 22 | DRUG | Bright Minds Biosciences Inc | Stock-Other | 1.35% | +0.66% | +128.80% | |
| 23 | ACRS | Aclaris Therapeutics Inc | Stock-Other | 0.86% | -0.12% | -29.69% | |
| 24 | HELP | Cybin Inc | Stock-Other | 0.85% | +0.85% | NEW | |
| 25 | KNSA | Kiniksa Pharmaceuticals International, plc | Stock-Other | 0.76% | +0.76% | NEW | |
| 26 | ROIV | Roivant Sciences Ltd. | Stock-Healthcare | 0.57% | +0.57% | NEW | |
| 27 | TNXP | Tonix Pharmaceuticals Holdin | Stock-Other | 0.51% | -0.11% | +0.17% | |
| 28 | TARA | Protara Therapeutic Inc | Stock-Other | 0.29% | -0.16% | — | |
| 29 | FTH | Faeth Therapeutics Inc | Stock-Other | 0.22% | +0.22% | NEW | |
| 30 | BOLD | Boundless Bio Inc | Stock-Other | 0.09% | +0.09% | NEW | |
| 31 | BMEA | Biomea Fusion Inc | Stock-Other | 0.05% | -0.22% | — | |
| 32 | VYNE | Vyne Therapeutics Inc | Stock-Other | 0.03% | +0.03% | NEW |
Portfolio Performance
Performance for Q3 2026
+12.9%
Performance Last 4 Quarters
+99.4%
- Stdev
- +35.4%
- Beta
- +1.02
- Alpha
- +6.4%
- Max Drawdown
- -39.3%
- Annualized Perf
- +21.5%
- Batting Avg vs S&P
- +43.3%
- Sortino
- +1.52
- Stutzer
- +0.22
- Treynor
- +0.25
- Sterling
- +0.78
- Calmar
- +0.55
- Information Ratio
- +0.21
- Tracking Error
- +33.2%
- Stdev Down
- +16.6%
- Winning Months %
- +46.7%
- Losing Months %
- +53.3%
- Best 12 Months
- +141.1%
- Worst 12 Months
- -39.3%
- Efficiency Ratio
- +0.26
- Sharpe
- +0.71
- Stdev Sectors
- 0%
- Skewness
- +0.85
- Kurtosis
- +0.49
- Upside Potential
- +3.68
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
💡
Data Source Notice: AlphaSMO is the web's most authoritative 13F / Inside Trader database. Institutional holdings and insider trades presented here are precisely computed to deliver accurate portfolio reporting.
Holding changes this quarter
Superstring Capital Management LP's most significant position changes for 2026-06-30: Sold out: Summit Therapeutics Inc (SMMT); New buy: Revolution Medicines Inc (RVMD); Sold out: Vertex Pharmaceuticals Inc (VRTX); Sold out: Iqvia Holdings Inc (IQV); New buy: Beone Medicines Ltd-adr (ONC).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | AXSM | Axsome Therapeutics Inc | +7% | +380.66% | Add |
| 2 | RVMD | Revolution Medicines Inc | +6% | NEW | New buy |
| 3 | TRVI | Trevi Therapeutics Inc | +4% | +108.38% | Add |
| 4 | GMAB | Genmab A/s -sp Adr | +3.7% | +118.90% | Add |
| 5 | CLYM | Climb Bio Inc | +3.3% | +161.58% | Add |
| 6 | CLDX | Celldex Therapeutics Inc | +2.7% | +59.73% | Add |
| 7 | ONC | Beone Medicines Ltd-adr | +2.2% | NEW | New buy |
| 8 | COGT | Cogent Biosciences Inc | +2.2% | +52.46% | Add |
| 9 | ANL | Adlai Nortye Ltd-adr | +2% | +33.18% | Add |
| 10 | ORIC | Oric Pharmaceuticals Inc | +1.7% | +252.39% | Add |
| 11 | HELP | Cybin Inc | +0.9% | NEW | New buy |
| 12 | DFTX | Definium Therapeutics Inc | +0.8% | -46.43% | Trim |
| 13 | VIR | Vir Biotechnology Inc | +0.8% | +16.86% | Add |
| 14 | KNSA | Kiniksa Pharmaceuticals International, plc | +0.8% | NEW | New buy |
| 15 | DRUG | Bright Minds Biosciences Inc | +0.7% | +128.80% | Add |
| 16 | ROIV | Roivant Sciences Ltd. | +0.6% | NEW | New buy |
| 17 | UTHR | United Therapeutics CORP | +0.3% | +38.30% | Add |
| 18 | FTH | Faeth Therapeutics Inc | +0.2% | NEW | New buy |
| 19 | CABA | Cabaletta Bio Inc | +0.2% | +19.92% | Add |
| 20 | BOLD | Boundless Bio Inc | +0.1% | NEW | New buy |
| 21 | MPLT | Maplight Therapeutics Inc | +0.1% | -34.72% | Trim |
| 22 | VYNE | Vyne Therapeutics Inc | 0% | NEW | New buy |
| 23 | TNXP | Tonix Pharmaceuticals Holdin | -0.1% | +0.17% | Add |
| 24 | ACRS | Aclaris Therapeutics Inc | -0.1% | -29.69% | Trim |
| 25 | TARA | Protara Therapeutic Inc | -0.2% | — | Unchanged |
| 26 | IPSC | Century Therapeutics Inc | -0.2% | EXIT | Sold out |
| 27 | BMEA | Biomea Fusion Inc | -0.2% | — | Unchanged |
| 28 | PTN | Palatin Technologies Inc | -0.5% | EXIT | Sold out |
| 29 | URGN | UroGen Pharma Ltd. | -0.5% | -50.61% | Trim |
| 30 | CGEM | Cullinan Therapeutics Inc | -0.6% | EXIT | Sold out |
| 31 | TSHA | Taysha Gene Therapies Inc | -0.8% | EXIT | Sold out |
| 32 | IMVT | Immunovant Inc | -1.3% | -41.73% | Trim |
| 33 | PFE | Pfizer Inc | -1.5% | EXIT | Sold out |
| 34 | ZLAB | Zai Lab Ltd-adr | -1.8% | -43.51% | Trim |
| 35 | PCVX | Vaxcyte Inc | -2.1% | -39.53% | Trim |
| 36 | TVTX | Travere Therapeutics Inc | -2.2% | EXIT | Sold out |
| 37 | ORKA | Oruka Therapeutics Inc | -2.2% | EXIT | Sold out |
| 38 | SION | Sionna Therapeutics Inc | -2.3% | -55.22% | Trim |
| 39 | ARVN | Arvinas Inc | -2.4% | EXIT | Sold out |
| 40 | SVRA | Savara Inc | -2.4% | -38.37% | Trim |
| 41 | IQV | Iqvia Holdings Inc | -3.1% | EXIT | Sold out |
| 42 | VRTX | Vertex Pharmaceuticals Inc | -3.5% | EXIT | Sold out |
| 43 | SMMT | Summit Therapeutics Inc | -12.1% | EXIT | Sold out |
Filing History
FAQ
What is Superstring Capital Management LP and what type of investor is it?
Superstring Capital Management LP is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $158.4M, spread across 32 disclosed positions.
What are Superstring Capital Management LP's largest equity positions?
Based on the latest 13F filing, Superstring Capital Management LP's top holdings by market value are:
1. Cogent Biosciences Inc (COGT) — $13.3M (8.4%)
2. Axsome Therapeutics Inc (AXSM) — $13.2M (8.3%)
3. Genmab A/s -sp Adr (GMAB) — $11.8M (7.5%)
4. Celldex Therapeutics Inc (CLDX) — $10.7M (6.8%)
5. Trevi Therapeutics Inc (TRVI) — $9.8M (6.2%)
What changes did Superstring Capital Management LP make in its most recent portfolio filing?
In the latest reported quarter, Superstring Capital Management LP made 41 notable position adjustments: 8 new positions were initiated, 13 existing holdings were added to, 9 positions were partially reduced, and 11 were completely exited. The largest of these moves: Sold out: Summit Therapeutics Inc (SMMT); New buy: Revolution Medicines Inc (RVMD); Sold out: Vertex Pharmaceuticals Inc (VRTX); Sold out: Iqvia Holdings Inc (IQV); New buy: Beone Medicines Ltd-adr (ONC)
What sectors does Superstring Capital Management LP focus on?
Superstring Capital Management LP is concentrated in the following sectors based on its current disclosed equity portfolio:
• Health Care: 100.0%
Investment Profile
Superstring Capital Management LP returned an annualized 21.5% over the trailing 30 months — outperforming the S&P 500 by 6.4 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.02 (roughly in line with the market) and a 43% quarterly batting average against the index.
Its portfolio is broadly diversified and fast-trading, with 100.0% of the portfolio concentrated in Health Care.
Its turnover score has risen from 0 to 83 over the past 4 quarters — a shift toward more active trading.
It has added to its GMAB position over the past two quarters (+$10.9M, now $11.8M), while trimming SION over the same stretch (-$4.7M, still holding $2.8M).
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SF
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CC
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Portfolio Stability0.0
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Developer Access
Access Superstring Capital Management LP's institutional profile programmatically:
REST API
curl https://alphasmo.com/api/v1/institutions/superstring-capital-management-lpCLI
npx alphasmo institutions get superstring-capital-management-lp