SC
Summa Corp. Quarterly 13F Portfolio Update (Q2 2026)
Summa Corp.CIK: 0001954929
Sector-focusedLong-term holderConcentrated strategy
Total reported value
$318.6M
Reporting period: 2026-06-30 · Number of holdings: 83
Summa Corp. disclosed 83 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $318.6M and a quarterly turnover rate of 0.0%.
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Personality snowflake
- Concentration
- 75.41
- Portfolio Stability
- 0
- Momentum
- 50
- Sector conviction
- 100
- Diversification
- 100
- Sizing Uniformity
- 61.5
Summa Corp.'s disclosed holdings carry a Herfindahl concentration index of 0.189 — mathematically equivalent to about 5 equally-sized positions, well below its 83 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 3.85), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govAdd AMD
-5.7% $42.2M
Trim NVDA
-7.1% $7.3M
Add MRVL
+19.0% $10.7M
Trim MSFT
+1.0% $149.4K
Trim SPY
-0.2% $1.0M
Add GINN
+55.2% $1.9M
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 | NVDA | Nvidia CORP | Stock-Tech | 37.06% | -8.73% | -7.08% | |
| 2 | AMD | Advanced Micro Devices | Stock-Tech | 21.06% | +10.76% | -5.67% | |
| 3 | MRVL | Marvell Technology Inc | Stock-Tech | 4.67% | +2.95% | +19.05% | |
| 4 | MSFT | Microsoft CORP | Stock-Tech | 2.69% | -0.79% | +1.00% | |
| 5 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 2.57% | -0.39% | -0.25% | |
| 6 | IWF | Ishares Russell 1000 Growth | ETF-Other | 2.24% | +0.27% | +414.64% | |
| 7 | QCOM | Qualcomm Inc | Stock-Tech | 2.03% | +0.22% | +2.94% | |
| 8 | QUAL | Ishares Msci USA Quality Fac | ETF-Other | 1.95% | -0.29% | — | |
| 9 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 1.67% | -0.17% | +4.72% | |
| 10 | VOO | Vanguard S&p 500 ETF | ETF-Large Cap & Growth | 1.53% | -0.18% | +2.78% | |
| 11 | DBEF | Xtrackers Msci Eafe Hedged E | ETF-Other | 1.47% | -0.13% | +9.35% | |
| 12 | IWD | Ishares Russell 1000 Value E | ETF-Other | 1.43% | +0.25% | +40.26% | |
| 13 | GINN | Goldman Sachs Innovate Eqty | ETF-Commodities | 1.36% | +0.36% | +55.21% | |
| 14 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 1.11% | -0.11% | -3.50% | |
| 15 | AAPL | Apple Inc | Stock-Tech | 1.10% | -0.22% | -3.84% | |
| 16 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 0.84% | -0.16% | +5.90% | |
| 17 | VEA | Vanguard Ftse Developed ETF | ETF-Other | 0.74% | -0.14% | — | |
| 18 | UBER | Uber Technologies Inc | Stock-Industrials | 0.59% | -0.19% | -0.81% | |
| 19 | OPRT | Oportun Financial CORP | Stock-Other | 0.53% | -0.23% | -26.09% | |
| 20 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 0.52% | -0.05% | -2.95% | |
| 21 | WMT | Walmart Inc | Stock-Consumer Staples | 0.52% | -0.23% | -0.52% | |
| 22 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 0.51% | +0.01% | -5.56% | |
| 23 | QQQ | Invesco Qqq Trust Series 1 | ETF-Tech | 0.45% | +0.02% | +8.18% | |
| 24 | VLO | Valero Energy CORP | Stock-Energy | 0.44% | -0.11% | — | |
| 25 | GLD | Spdr Gold Shares | ETF-Commodities | 0.44% | -0.23% | — | |
| 26 | VB | Vanguard Small-cap ETF | ETF-Other | 0.44% | -0.06% | — | |
| 27 | IEF | Ishares 7-10 Year Treasury B | ETF-Gov Bonds | 0.41% | -0.14% | — | |
| 28 | SHY | Ishares 1-3 Year Treasury Bo | ETF-Gov Bonds | 0.40% | -0.08% | +12.36% | |
| 29 | MINT | Pimco Enhanced Short Maturit | ETF-Other | 0.39% | +0.04% | +48.21% | |
| 30 | JPM | Jpmorgan Chase & Co | Stock-Financials | 0.37% | -0.09% | -5.26% | |
| 31 | EMB | Ishares Jp Morgan Usd Emergi | ETF-Other | 0.37% | -0.10% | — | |
| 32 | SLQD | Ishares 0-5 Yr Inv Grd CORP | ETF-Other | 0.28% | -0.03% | +21.62% | |
| 33 | XOM | Exxon Mobil CORP | Stock-Energy | 0.28% | -0.18% | — | |
| 34 | AGG | Ishares Core U.s. Aggregate | ETF-Other | 0.27% | -0.02% | +21.28% | |
| 35 | IDV | Ishares International Select | ETF-Other | 0.26% | +0.10% | +127.24% | |
| 36 | AVGO | Broadcom Inc | Stock-Tech | 0.24% | -0.08% | -19.16% | |
| 37 | VCSH | Vanguard S/t CORP Bond ETF | ETF-Corp Bonds | 0.24% | -0.07% | — | |
| 38 | JNJ | Johnson & Johnson | Stock-Healthcare | 0.23% | -0.08% | -3.64% | |
| 39 | IEI | Ishares 3-7 Year Treasury Bo | ETF-Gov Bonds | 0.23% | -0.18% | -25.53% | |
| 40 | TIP | Ishares Tips Bond ETF | ETF-Other | 0.22% | -0.07% | — | |
| 41 | MRK | Merck & Co. Inc. | Stock-Healthcare | 0.22% | -0.05% | — | |
| 42 | VWOB | Vanguard Emerg Mkts Gov Bnd | ETF-Other | 0.21% | -0.06% | — | |
| 43 | AAXJ | Ishares Msci All Country Asi | ETF-Other | 0.21% | -0.01% | — | |
| 44 | BIL | Ss Spdr Bb 1-3m T-bill ETF | ETF-Gov Bonds | 0.20% | -0.07% | +0.07% | |
| 45 | O | Realty Income CORP | Stock-Real Estate | 0.20% | -0.07% | — | |
| 46 | VYM | Vanguard High Dvd Yield ETF | ETF-Other | 0.20% | -0.04% | — | |
| 47 | TMO | Thermo Fisher Scientific Inc | Stock-Healthcare | 0.20% | — | +25.30% | |
| 48 | IWO | Ishares Russell 2000 Growth | ETF-Small Cap | 0.20% | +0.04% | +27.51% | |
| 49 | ABBV | Abbvie Inc | Stock-Healthcare | 0.19% | -0.03% | — | |
| 50 | META | Meta Platforms Inc-class A | Stock-Comm Services | 0.19% | -0.04% | +8.85% |
1–50 of 83
Portfolio Performance
Performance for Q3 2026
0%
Performance Last 4 Quarters
+39.1%
- Stdev
- +25.1%
- Beta
- +1.63
- Alpha
- -2.6%
- Max Drawdown
- -15.8%
- Annualized Perf
- +27.5%
- Batting Avg vs S&P
- +50%
- Sortino
- +2.51
- Stutzer
- +0.34
- Treynor
- +0.17
- Sterling
- +1.14
- Calmar
- +1.74
- Information Ratio
- +0.52
- Tracking Error
- +17.3%
- Stdev Down
- +11%
- Winning Months %
- +60%
- Losing Months %
- +40%
- Best 12 Months
- +76.5%
- Worst 12 Months
- -8.6%
- Efficiency Ratio
- +0.5
- Sharpe
- +1.09
- Stdev Sectors
- +27.7%
- Skewness
- +0.72
- Kurtosis
- +0.2
- Upside Potential
- +4.32
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
Holding changes this quarter
Summa Corp.'s most significant position changes for 2026-06-30: Sold out: Oracle CORP (ORCL); New buy: Ishares Msci Eafe ETF (EFA); Sold out: Eli Lilly & Co (LLY); New buy: Micron Technology Inc (MU); New buy: Ishares Russell 2000 Value E (IWN).
1–50 of 90
Filing History
FAQ
What is Summa Corp. and what type of investor is it?
Summa Corp. 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 $318.6M, spread across 83 disclosed positions.
What are Summa Corp.'s largest equity positions?
Based on the latest 13F filing, Summa Corp.'s top holdings by market value are:
1. Nvidia CORP (NVDA) — $118.1M (37.1%)
2. Advanced Micro Devices (AMD) — $67.1M (21.1%)
3. Marvell Technology Inc (MRVL) — $14.9M (4.7%)
4. Microsoft CORP (MSFT) — $8.6M (2.7%)
5. Ss Spdr S&p 500 ETF Trust-us (SPY) — $8.2M (2.6%)
What changes did Summa Corp. make in its most recent portfolio filing?
In the latest reported quarter, Summa Corp. made 57 notable position adjustments: 7 new positions were initiated, 24 existing holdings were added to, 19 positions were partially reduced, and 7 were completely exited. The largest of these moves: Sold out: Oracle CORP (ORCL); New buy: Ishares Msci Eafe ETF (EFA); Sold out: Eli Lilly & Co (LLY); New buy: Micron Technology Inc (MU); New buy: Ishares Russell 2000 Value E (IWN)
What sectors does Summa Corp. focus on?
Summa Corp. is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 89.5%
• Communication Services: 2.5%
• Consumer Discretionary: 2.3%
• Financials: 1.3%
• Energy: 1.2%
• Health Care: 1.1%
Investment Profile
Summa Corp. returned an annualized 27.5% over the trailing 30 months — underperforming the S&P 500 by 2.6 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.63 (more volatile than the market) and a 50% quarterly batting average against the index.
Its portfolio is concentrated and long-term-holding, with 89.5% of the portfolio concentrated in Information Technology.
Its concentration score has fallen from 100 to 75 over the past 4 quarters — a shift toward broader diversification.
It has added to its MRVL position over the past two quarters (+$11.5M, now $14.9M), while trimming GLD over the same stretch (-$510.4K, still holding $1.4M).
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