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 and exited 7; 45 existing positions rose in reported value and 12 fell.
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.
Long-equity book
Distinct positions
Filed 2026-08-06
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q2 26Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q1 26 → Q2 26Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
3 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 77.5%Cumulative share of the portfolio held in the largest N positions.
As of the firm’s regulatory filing dated Sep 17, 2026.
SUITE 470
THE WOODLANDS, TX 77380
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| BERNALDO DE QUIROS, MARIA, LUISA Control | PRESIDENT, DIRECTOR AND CHIEF COMPLIANCE OFFICER since Jan 2001 | 50–75% | Individual |
| ELALVAL LLC Control | SHAREHOLDER since Apr 2026 | 50–75% | Domestic Entity |
| Valenzuela Del Rio, Alonso Control | CEO AND DIRECTOR since Apr 2026 | Less than 5% | Individual |
| DE LA GARZA, RODRIGO, GERARDO | DIRECTOR AND SECRETARY since Feb 2020 | Less than 5% | Individual |
| Valenzuela Del Rio, Alonso Control Indirect owner via ELALVAL LLC | OWNER since Mar 2024 | 75% or more | Individual |
Ownership & leadership changes · 3 filings with changes since Mar 29, 2012
From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.
- AddedValenzuela Del Rio, Alonso · CEO AND DIRECTOR · Less than 5% · control person
- AddedELALVAL LLC · SHAREHOLDER · 50–75% · control person
- AddedValenzuela Del Rio, Alonso · OWNER · 75% or more · indirect via ELALVAL LLC · control person
- ChangedBERNALDO DE QUIROS, MARIA, LUISA · title PRESIDENT/CHIEF COMPLIANCE OFFICER → PRESIDENT, DIRECTOR AND CHIEF COMPLIANCE OFFICER; ownership 75% or more → 50–75%
- ChangedDE LA GARZA, RODRIGO, GERARDO · title DIRECTOR / SECRETARY → DIRECTOR AND SECRETARY
- AddedDE LA GARZA, RODRIGO, GERARDO · DIRECTOR / SECRETARY · Less than 5%
- ListedBERNALDO DE QUIROS, MARIA, LUISA · PRESIDENT/CHIEF COMPLIANCE OFFICER · 75% or more · control person
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
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
Summa Corp. Holdings (2026-06-30)
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 |
SUITE 260
TOMBALL, TX 77375