Summa Corp. — 13F Holdings & Portfolio
CIK 1954929 · latest 13F-HR filed 2026-08-06
Summa Corp. manages $318.6M in 13F-reported U.S. long-equity assets across 83 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are NVDA (37.06%), AMD (21.06%), MRVL (4.67%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 7 new positions, exited 7, added to 45, and trimmed 12.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
SUITE 260
TOMBALL, TX 77375
$318.6M
Long-equity book
83
Distinct positions
2026-06-30
Filed 2026-08-06
+7 / −7 / ↑45 / ↓12
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- ADVANCED MICRO DEVICES INC$42.2M +169.4%
- MARVELL TECHNOLOGY INC$10.7M +258.0%
- NVIDIA CORPORATION$7.3M +6.6%
- ISHARES TR$2.4M +49.9%
- QUALCOMM INC$2.1M +47.7%
Top Trims
- MASTERCARD INCORPORATED-$289.2K -33.6%
- ISHARES TR-$257.9K -26.3%
- SPDR GOLD TR-$234.5K -14.4%
- COSTCO WHOLESALE CORPORATION-$217.6K -43.7%
- EXXON MOBIL CORP-$217.4K -19.4%
New Positions
- ISHARES TR$374.1K
- MICRON TECHNOLOGY INC$305.9K
- ISHARES TR$287.3K
- GOLDMAN SACHS ETF TR$283.0K
- ASML HLDG NV$264.6K
Exited Positions
- ORACLE CORP$453.4K
- ELI LILLY & CO$342.2K
- HONEYWELL INTL INC$248.6K
- SHOPIFY INC$243.3K
- ZOETIS INC$205.6K
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | NVIDIA CORPORATION | NVDA | 67066G104 | $118.1M | 37.06% | 590,160 | SH |
| 2 | ADVANCED MICRO DEVICES INC | AMD | 007903107 | $67.1M | 21.06% | 115,529 | SH |
| 3 | MARVELL TECHNOLOGY INC | MRVL | 573874104 | $14.9M | 4.67% | 50,000 | SH |
| 4 | MICROSOFT CORP | MSFT | 594918104 | $8.6M | 2.69% | 22,948 | SH |
| 5 | STATE STR SPDR S&P 500 ETF T | SPY | 78462F103 | $8.2M | 2.57% | 10,966 | SH |
| 6 | ISHARES TR | IWF | 464287614 | $7.2M | 2.24% | 57,588 | SH |
| 7 | QUALCOMM INC | QCOM | 747525103 | $6.5M | 2.03% | 35,000 | SH |
| 8 | ISHARES TR | QUAL | 46432F339 | $6.2M | 1.95% | 28,300 | SH |
| 9 | AMAZON COM INC | AMZN | 023135106 | $5.3M | 1.67% | 22,339 | SH |
| 10 | VANGUARD INDEX FDS | VOO | 922908363 | $4.9M | 1.53% | 7,104 | SH |
| 11 | DBX ETF TR | DBEF | 233051200 | $4.7M | 1.47% | 85,816 | SH |
| 12 | ISHARES TR | IWD | 464287598 | $4.5M | 1.43% | 18,766 | SH |
| 13 | GOLDMAN SACHS ETF TR | GINN | 38149W820 | $4.3M | 1.36% | 55,150 | SH |
| 14 | ALPHABET INC | GOOGL | 02079K305 | $3.5M | 1.11% | 9,928 | SH |
| 15 | APPLE INC | AAPL | 037833100 | $3.5M | 1.10% | 12,060 | SH |
| 16 | BERKSHIRE HATHAWAY INC DEL | BRK.B | 084670702 | $2.7M | 0.84% | 5,367 | SH |
| 17 | VANGUARD TAX-MANAGED FDS | VEA | 921943858 | $2.4M | 0.74% | 33,181 | SH |
| 18 | UBER TECHNOLOGIES INC | UBER | 90353T100 | $1.9M | 0.59% | 25,929 | SH |
| 19 | OPORTUN FINL CORP | OPRT | 68376D104 | $1.7M | 0.53% | 293,266 | SH |
| 20 | ALPHABET INC | GOOG | 02079K107 | $1.7M | 0.52% | 4,706 | SH |
| 21 | WALMART INC | WMT | 931142103 | $1.6M | 0.52% | 14,537 | SH |
| 22 | TAIWAN SEMICONDUCTOR MANUFAC | TSM | 874039100 | $1.6M | 0.51% | 3,400 | SH |
| 23 | INVESCO QQQ TR | QQQ | 46090E103 | $1.4M | 0.45% | 1,943 | SH |
| 24 | VALERO ENERGY CORP | VLO | 91913Y100 | $1.4M | 0.44% | 5,400 | SH |
| 25 | SPDR GOLD TR | GLD | 78463V107 | $1.4M | 0.44% | 3,788 | SH |
| 26 | VANGUARD INDEX FDS | VB | 922908751 | $1.4M | 0.44% | 4,577 | SH |
| 27 | ISHARES TR | IEF | 464287440 | $1.3M | 0.41% | 13,827 | SH |
| 28 | ISHARES TR | SHY | 464287457 | $1.3M | 0.40% | 15,714 | SH |
| 29 | PIMCO ETF TR | MINT | 72201R833 | $1.3M | 0.39% | 12,450 | SH |
| 30 | JPMORGAN CHASE & CO | JPM | 46625H100 | $1.2M | 0.37% | 3,600 | SH |
| 31 | ISHARES TR | EMB | 464288281 | $1.2M | 0.37% | 12,175 | SH |
| 32 | ISHARES TR | SLQD | 46434V100 | $906.7K | 0.28% | 18,000 | SH |
| 33 | EXXON MOBIL CORP | XOM | 30231G102 | $902.4K | 0.28% | 6,600 | SH |
| 34 | ISHARES TR | AGG | 464287226 | $846.3K | 0.27% | 8,550 | SH |
| 35 | ISHARES TR | IDV | 464288448 | $829.5K | 0.26% | 20,022 | SH |
| 36 | BROADCOM INC | AVGO | 11135F101 | $755.5K | 0.24% | 2,000 | SH |
| 37 | VANGUARD SCOTTSDALE FDS | VCSH | 92206C409 | $750.8K | 0.24% | 9,500 | SH |
| 38 | JOHNSON & JOHNSON | JNJ | 478160104 | $739.1K | 0.23% | 2,910 | SH |
| 39 | ISHARES TR | IEI | 464288661 | $724.7K | 0.23% | 6,170 | SH |
| 40 | ISHARES TR | TIP | 464287176 | $703.6K | 0.22% | 6,430 | SH |
| 41 | MERCK & CO INC | MRK | 58933Y105 | $688.8K | 0.22% | 5,360 | SH |
| 42 | VANGUARD WHITEHALL FDS | VWOB | 921946885 | $672.4K | 0.21% | 10,000 | SH |
| 43 | ISHARES TR | AAXJ | 464288182 | $656.3K | 0.21% | 5,500 | SH |
| 44 | SPDR SERIES TRUST | BIL | 78468R663 | $650.6K | 0.20% | 7,100 | SH |
| 45 | REALTY INCOME CORP | O | 756109104 | $650.6K | 0.20% | 10,500 | SH |
| 46 | VANGUARD WHITEHALL FDS | VYM | 921946406 | $632.1K | 0.20% | 4,000 | SH |
| 47 | THERMO FISHER SCIENTIFIC INC | TMO | 883556102 | $628.2K | 0.20% | 1,253 | SH |
| 48 | ISHARES TR | IWO | 464287648 | $624.4K | 0.20% | 1,585 | SH |
| 49 | ABBVIE INC | ABBV | 00287Y109 | $603.9K | 0.19% | 2,400 | SH |
| 50 | META PLATFORMS INC | META | 30303M102 | $596.0K | 0.19% | 1,058 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-06 | $318.6M | 83 | 0001214659-26-009701 |
| 2026-03-31 | 2026-04-30 | $241.9M | 83 | 0001214659-26-005326 |
| 2025-12-31 | 2026-01-21 | $233.2M | 83 | 0001214659-26-000679 |