Filed: 10/27/2025ACC: 0001214659-25-015365
📋 What this filing means
SUMMA CORP. filed this quarterly 13F‑HR report disclosing 76 equity positions with a total reported market value of $227.41M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
76
Positions
$227.41M
Total AUM (reported)
1.80M
Total Shares
Allocation by class
COM$184.17M81.0%
SPONSORED ADS$6.87M3.0%
RUS 1000 GRW ETF$5.41M2.4%
RUS 1000 VAL ETF$2.72M1.2%
CAP STK CL A$2.68M1.2%
CL B NEW$2.31M1.0%
XTRACK MSCI EAFE$2.18M1.0%
Portfolio Concentration
Top 3$147.51M64.9%
4–10$31.08M13.7%
11–25$24.38M10.7%
Rest$24.45M10.8%
Top 3 weight
64.9%
Top 10 weight
78.5%
Voting Authority Distribution
Total shares with voting rights: 1.80M
Sole
Full voting authority
1.80M
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)
Sole69
Shared0
Other7
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings76
Rows:
NVIDIA CORPORATION
SOLEShares614.63K
TypeSH
Market value$114.68M
50.43%
Sole
614.63K
Shared
0.00
None
0.00
ADVANCED MICRO DEVICES INC
SOLEShares129.67K
TypeSH
Market value$20.98M
9.23%
Sole
129.67K
Shared
0.00
None
0.00
MICROSOFT CORP
SOLEShares22.88K
TypeSH
Market value$11.85M
5.21%
Sole
22.88K
Shared
0.00
None
0.00
ALIBABA GROUP HLDG LTD
SOLEShares33.11K
TypeSH
Market value$5.92M
2.60%
Sole
33.11K
Shared
0.00
None
0.00
QUALCOMM INC
SOLEShares35K
TypeSH
Market value$5.82M
2.56%
Sole
35K
Shared
0.00
None
0.00
ISHARES TR
SOLEShares11.55K
TypeSH
Market value$5.41M
2.38%
Sole
11.55K
Shared
0.00
None
0.00
AMAZON COM INC
SOLEShares21.43K
TypeSH
Market value$4.71M
2.07%
Sole
21.43K
Shared
0.00
None
0.00
APPLE INC
SOLEShares12.75K
TypeSH
Market value$3.25M
1.43%
Sole
12.75K
Shared
0.00
None
0.00
MARVELL TECHNOLOGY INC
SOLEShares38K
TypeSH
Market value$3.19M
1.40%
Sole
38K
Shared
0.00
None
0.00
OPORTUN FINL CORP
SOLEShares449.97K
TypeSH
Market value$2.78M
1.22%
Sole
449.97K
Shared
0.00
None
0.00
ISHARES TR
SOLEShares13.38K
TypeSH
Market value$2.72M
1.20%
Sole
13.38K
Shared
0.00
None
0.00
ALPHABET INC
SOLEShares11.03K
TypeSH
Market value$2.68M
1.18%
Sole
11.03K
Shared
0.00
None
0.00
UBER TECHNOLOGIES INC
SOLEShares25.21K
TypeSH
Market value$2.47M
1.09%
Sole
25.21K
Shared
0.00
None
0.00
BERKSHIRE HATHAWAY INC DEL
SOLEShares4.60K
TypeSH
Market value$2.31M
1.02%
Sole
4.60K
Shared
0.00
None
0.00
DBX ETF TR
SOLEShares47.04K
TypeSH
Market value$2.18M
0.96%
Sole
47.04K
Shared
0.00
None
0.00
SPDR GOLD TR
SOLEShares4.81K
TypeSH
Market value$1.71M
0.75%
Sole
4.81K
Shared
0.00
None
0.00
WALMART INC
SOLEShares15.57K
TypeSH
Market value$1.60M
0.71%
Sole
15.57K
Shared
0.00
None
0.00
SPDR S&P 500 ETF TR
SOLEShares1.76K
TypeSH
Market value$1.17M
0.51%
Sole
1.76K
Shared
0.00
None
0.00
ISHARES TR
SOLEShares11.85K
TypeSH
Market value$1.14M
0.50%
Sole
11.85K
Shared
0.00
None
0.00
JPMORGAN CHASE & CO.
SOLEShares3.60K
TypeSH
Market value$1.14M
0.50%
Sole
3.60K
Shared
0.00
None
0.00
ALPHABET INC
SOLEShares4.64K
TypeSH
Market value$1.13M
0.50%
Sole
4.64K
Shared
0.00
None
0.00
BITMINE IMMERSION TECNOLOGIE
SOLEShares21K
TypeSH
Market value$1.09M
0.48%
Sole
21K
Shared
0.00
None
0.00
ISHARES TR
SOLEShares8.62K
TypeSH
Market value$1.03M
0.45%
Sole
8.62K
Shared
0.00
None
0.00
INVESCO QQQ TR
SOLEShares1.68K
TypeSH
Market value$1.01M
0.44%
Sole
1.68K
Shared
0.00
None
0.00
MASTERCARD INCORPORATED
SOLEShares1.74K
TypeSH
Market value$987.5K
0.43%
Sole
1.74K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
NVIDIA CORPORATIONSOLE | COM | 614.63K | SH | $114.68M 50.43% | 614.63K | 0.00 | 0.00 |
ADVANCED MICRO DEVICES INCSOLE | COM | 129.67K | SH | $20.98M 9.23% | 129.67K | 0.00 | 0.00 |
MICROSOFT CORPSOLE | COM | 22.88K | SH | $11.85M 5.21% | 22.88K | 0.00 | 0.00 |
ALIBABA GROUP HLDG LTDSOLE | SPONSORED ADS | 33.11K | SH | $5.92M 2.60% | 33.11K | 0.00 | 0.00 |
QUALCOMM INCSOLE | COM | 35K | SH | $5.82M 2.56% | 35K | 0.00 | 0.00 |
ISHARES TRSOLE | RUS 1000 GRW ETF | 11.55K | SH | $5.41M 2.38% | 11.55K | 0.00 | 0.00 |
AMAZON COM INCSOLE | COM | 21.43K | SH | $4.71M 2.07% | 21.43K | 0.00 | 0.00 |
APPLE INCSOLE | COM | 12.75K | SH | $3.25M 1.43% | 12.75K | 0.00 | 0.00 |
MARVELL TECHNOLOGY INCSOLE | COM | 38K | SH | $3.19M 1.40% | 38K | 0.00 | 0.00 |
OPORTUN FINL CORPSOLE | COM | 449.97K | SH | $2.78M 1.22% | 449.97K | 0.00 | 0.00 |
ISHARES TRSOLE | RUS 1000 VAL ETF | 13.38K | SH | $2.72M 1.20% | 13.38K | 0.00 | 0.00 |
ALPHABET INCSOLE | CAP STK CL A | 11.03K | SH | $2.68M 1.18% | 11.03K | 0.00 | 0.00 |
UBER TECHNOLOGIES INCSOLE | COM | 25.21K | SH | $2.47M 1.09% | 25.21K | 0.00 | 0.00 |
BERKSHIRE HATHAWAY INC DELSOLE | CL B NEW | 4.60K | SH | $2.31M 1.02% | 4.60K | 0.00 | 0.00 |
DBX ETF TRSOLE | XTRACK MSCI EAFE | 47.04K | SH | $2.18M 0.96% | 47.04K | 0.00 | 0.00 |
SPDR GOLD TRSOLE | GOLD SHS | 4.81K | SH | $1.71M 0.75% | 4.81K | 0.00 | 0.00 |
WALMART INCSOLE | COM | 15.57K | SH | $1.60M 0.71% | 15.57K | 0.00 | 0.00 |
SPDR S&P 500 ETF TRSOLE | TR UNIT | 1.76K | SH | $1.17M 0.51% | 1.76K | 0.00 | 0.00 |
ISHARES TRSOLE | 7-10 YR TRSY BD | 11.85K | SH | $1.14M 0.50% | 11.85K | 0.00 | 0.00 |
JPMORGAN CHASE & CO.SOLE | COM | 3.60K | SH | $1.14M 0.50% | 3.60K | 0.00 | 0.00 |
ALPHABET INCSOLE | CAP STK CL C | 4.64K | SH | $1.13M 0.50% | 4.64K | 0.00 | 0.00 |
BITMINE IMMERSION TECNOLOGIESOLE | COM NEW | 21K | SH | $1.09M 0.48% | 21K | 0.00 | 0.00 |
ISHARES TRSOLE | 3 7 YR TREAS BD | 8.62K | SH | $1.03M 0.45% | 8.62K | 0.00 | 0.00 |
INVESCO QQQ TRSOLE | UNIT SER 1 | 1.68K | SH | $1.01M 0.44% | 1.68K | 0.00 | 0.00 |
MASTERCARD INCORPORATEDSOLE | CL A | 1.74K | SH | $987.5K 0.43% | 1.74K | 0.00 | 0.00 |
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