Filed: 4/30/2026ACC: 0001214659-26-005326
📋 What this filing means
SUMMA CORP. filed this quarterly 13F‑HR report disclosing 83 equity positions with a total reported market value of $241.91M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
83
Positions
$241.91M
Total AUM (reported)
1.90M
Total Shares
Allocation by class
COM$177.93M73.6%
TR UNIT$7.15M3.0%
MSCI USA QLT FCT$5.43M2.2%
RUS 1000 GRW ETF$4.77M2.0%
S&P 500 ETF SHS$4.13M1.7%
XTRACK MSCI EAFE$3.88M1.6%
CAP STK CL A$2.96M1.2%
Portfolio Concentration
Top 3$144.09M59.6%
4–10$34.46M14.2%
11–25$32.28M13.3%
Rest$31.09M12.9%
Top 3 weight
59.6%
Top 10 weight
73.8%
Voting Authority Distribution
Total shares with voting rights: 1.90M
Sole
Full voting authority
1.90M
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole83
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings83
Rows:
NVIDIA CORPORATION
SOLEShares635.09K
TypeSH
Market value$110.76M
45.79%
Sole
635.09K
Shared
0.00
None
0.00
ADVANCED MICRO DEVICES INC
SOLEShares122.47K
TypeSH
Market value$24.91M
10.30%
Sole
122.47K
Shared
0.00
None
0.00
MICROSOFT CORP
SOLEShares22.72K
TypeSH
Market value$8.41M
3.48%
Sole
22.72K
Shared
0.00
None
0.00
STATE STR SPDR S&P 500 ETF T
SOLEShares10.99K
TypeSH
Market value$7.15M
2.96%
Sole
10.99K
Shared
0.00
None
0.00
ISHARES TR
SOLEShares28.30K
TypeSH
Market value$5.43M
2.24%
Sole
28.30K
Shared
0.00
None
0.00
ISHARES TR
SOLEShares11.19K
TypeSH
Market value$4.77M
1.97%
Sole
11.19K
Shared
0.00
None
0.00
AMAZON COM INC
SOLEShares21.33K
TypeSH
Market value$4.44M
1.84%
Sole
21.33K
Shared
0.00
None
0.00
QUALCOMM INC
SOLEShares34K
TypeSH
Market value$4.38M
1.81%
Sole
34K
Shared
0.00
None
0.00
MARVELL TECHNOLOGY INC
SOLEShares42K
TypeSH
Market value$4.16M
1.72%
Sole
42K
Shared
0.00
None
0.00
VANGUARD INDEX FDS
SOLEShares6.91K
TypeSH
Market value$4.13M
1.71%
Sole
6.91K
Shared
0.00
None
0.00
DBX ETF TR
SOLEShares78.48K
TypeSH
Market value$3.88M
1.60%
Sole
78.48K
Shared
0.00
None
0.00
APPLE INC
SOLEShares12.54K
TypeSH
Market value$3.18M
1.32%
Sole
12.54K
Shared
0.00
None
0.00
ALPHABET INC
SOLEShares10.29K
TypeSH
Market value$2.96M
1.22%
Sole
10.29K
Shared
0.00
None
0.00
ISHARES TR
SOLEShares13.38K
TypeSH
Market value$2.86M
1.18%
Sole
13.38K
Shared
0.00
None
0.00
BERKSHIRE HATHAWAY INC DEL
SOLEShares5.07K
TypeSH
Market value$2.43M
1.00%
Sole
5.07K
Shared
0.00
None
0.00
GOLDMAN SACHS ETF TR
SOLEShares35.53K
TypeSH
Market value$2.43M
1.00%
Sole
35.53K
Shared
0.00
None
0.00
VANGUARD TAX-MANAGED FDS
SOLEShares33.18K
TypeSH
Market value$2.13M
0.88%
Sole
33.18K
Shared
0.00
None
0.00
UBER TECHNOLOGIES INC
SOLEShares26.14K
TypeSH
Market value$1.88M
0.78%
Sole
26.14K
Shared
0.00
None
0.00
OPORTUN FINL CORP
SOLEShares396.77K
TypeSH
Market value$1.83M
0.76%
Sole
396.77K
Shared
0.00
None
0.00
WALMART INC
SOLEShares14.61K
TypeSH
Market value$1.82M
0.75%
Sole
14.61K
Shared
0.00
None
0.00
SPDR GOLD TR
SOLEShares3.79K
TypeSH
Market value$1.63M
0.67%
Sole
3.79K
Shared
0.00
None
0.00
ALPHABET INC
SOLEShares4.85K
TypeSH
Market value$1.39M
0.57%
Sole
4.85K
Shared
0.00
None
0.00
VALERO ENERGY CORP
SOLEShares5.40K
TypeSH
Market value$1.33M
0.55%
Sole
5.40K
Shared
0.00
None
0.00
ISHARES TR
SOLEShares13.83K
TypeSH
Market value$1.32M
0.55%
Sole
13.83K
Shared
0.00
None
0.00
TAIWAN SEMICONDUCTOR MANUFAC
SOLEShares3.60K
TypeSH
Market value$1.22M
0.50%
Sole
3.60K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
NVIDIA CORPORATIONSOLE | COM | 635.09K | SH | $110.76M 45.79% | 635.09K | 0.00 | 0.00 |
ADVANCED MICRO DEVICES INCSOLE | COM | 122.47K | SH | $24.91M 10.30% | 122.47K | 0.00 | 0.00 |
MICROSOFT CORPSOLE | COM | 22.72K | SH | $8.41M 3.48% | 22.72K | 0.00 | 0.00 |
STATE STR SPDR S&P 500 ETF TSOLE | TR UNIT | 10.99K | SH | $7.15M 2.96% | 10.99K | 0.00 | 0.00 |
ISHARES TRSOLE | MSCI USA QLT FCT | 28.30K | SH | $5.43M 2.24% | 28.30K | 0.00 | 0.00 |
ISHARES TRSOLE | RUS 1000 GRW ETF | 11.19K | SH | $4.77M 1.97% | 11.19K | 0.00 | 0.00 |
AMAZON COM INCSOLE | COM | 21.33K | SH | $4.44M 1.84% | 21.33K | 0.00 | 0.00 |
QUALCOMM INCSOLE | COM | 34K | SH | $4.38M 1.81% | 34K | 0.00 | 0.00 |
MARVELL TECHNOLOGY INCSOLE | COM | 42K | SH | $4.16M 1.72% | 42K | 0.00 | 0.00 |
VANGUARD INDEX FDSSOLE | S&P 500 ETF SHS | 6.91K | SH | $4.13M 1.71% | 6.91K | 0.00 | 0.00 |
DBX ETF TRSOLE | XTRACK MSCI EAFE | 78.48K | SH | $3.88M 1.60% | 78.48K | 0.00 | 0.00 |
APPLE INCSOLE | COM | 12.54K | SH | $3.18M 1.32% | 12.54K | 0.00 | 0.00 |
ALPHABET INCSOLE | CAP STK CL A | 10.29K | SH | $2.96M 1.22% | 10.29K | 0.00 | 0.00 |
ISHARES TRSOLE | RUS 1000 VAL ETF | 13.38K | SH | $2.86M 1.18% | 13.38K | 0.00 | 0.00 |
BERKSHIRE HATHAWAY INC DELSOLE | CL B NEW | 5.07K | SH | $2.43M 1.00% | 5.07K | 0.00 | 0.00 |
GOLDMAN SACHS ETF TRSOLE | INNOVAT EQ ETF | 35.53K | SH | $2.43M 1.00% | 35.53K | 0.00 | 0.00 |
VANGUARD TAX-MANAGED FDSSOLE | VAN FTSE DEV MKT | 33.18K | SH | $2.13M 0.88% | 33.18K | 0.00 | 0.00 |
UBER TECHNOLOGIES INCSOLE | COM | 26.14K | SH | $1.88M 0.78% | 26.14K | 0.00 | 0.00 |
OPORTUN FINL CORPSOLE | COM | 396.77K | SH | $1.83M 0.76% | 396.77K | 0.00 | 0.00 |
WALMART INCSOLE | COM | 14.61K | SH | $1.82M 0.75% | 14.61K | 0.00 | 0.00 |
SPDR GOLD TRSOLE | GOLD SHS | 3.79K | SH | $1.63M 0.67% | 3.79K | 0.00 | 0.00 |
ALPHABET INCSOLE | CAP STK CL C | 4.85K | SH | $1.39M 0.57% | 4.85K | 0.00 | 0.00 |
VALERO ENERGY CORPSOLE | COM | 5.40K | SH | $1.33M 0.55% | 5.40K | 0.00 | 0.00 |
ISHARES TRSOLE | 7-10 YR TRSY BD | 13.83K | SH | $1.32M 0.55% | 13.83K | 0.00 | 0.00 |
TAIWAN SEMICONDUCTOR MANUFACSOLE | SPONSORED ADS | 3.60K | SH | $1.22M 0.50% | 3.60K | 0.00 | 0.00 |
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