Institutional Manager · CIK 0001954929
Summa Corp.
Tomball, TX · File #028-23625
Latest AUM
$233.2M
Positions
83
Top-10 Concentration
82.4%
Filings
8
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| REDUCE | ALIBABA GROUP HLDG LTD | BBAAY | -29,031 | -$4.3M | -$1.1M |
| REDUCE | ADVANCED MICRO DEVICES INC | AMD | -7,900 | -$1.7M | +$6.8M |
| ADD | ALPHABET INC | GOOG | +2,648 | +$830,942 | +$79,875 |
| ADD | ISHARES TR | 464288281 | +6,586 | +$634,397 | +$6,343 |
| NEW | ISHARES TR | 464288448 | +15,588 | +$615,102 | $0 |
| NEW | META PLATFORMS INC | META | +884 | +$583,520 | $0 |
| EXITED | ADOBE INC | 00724F101 | -1,280 | -$451,520 | $0 |
| EXITED | UNITEDHEALTH GROUP INC | 91324P102 | -1,250 | -$431,625 | $0 |
| NEW | ISHARES INC | 464286426 | +4,086 | +$384,615 | $0 |
| EXITED | ISHARES TR | 464288679 | -3,450 | -$381,191 | $0 |
Sector Allocation
Filing History
- 13F COMBINATION REPORTQ/E Dec 202583 pos · $233.2M
- 13F COMBINATION REPORTQ/E Sep 202582 pos · $227.4M
- 13F COMBINATION REPORTQ/E Jun 202581 pos · $192.4M
- 13F COMBINATION REPORTQ/E Mar 202565 pos · $172.9M
- 13F COMBINATION REPORTQ/E Dec 202468 pos · $203.9M
- 13F COMBINATION REPORTQ/E Sep 202472 pos · $208.6M
- 13F COMBINATION REPORTQ/E Jun 202467 pos · $206.3M
- 13F COMBINATION REPORTQ/E Mar 202465 pos · $183.1M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | NVIDIA CORPORATION | NVDA | 633,648 | $118.2M | 53.22% |
| 2 | ADVANCED MICRO DEVICES INC | AMD | 121,770 | $26.1M | 11.74% |
| 3 | MICROSOFT CORP | MSFT | 20,999 | $10.2M | 4.57% |
| 4 | QUALCOMM INC | QCOM | 35,000 | $6.0M | 2.70% |
| 5 | ISHARES TR | 464287614 | 11,026 | $5.2M | 2.35% |
| 6 | AMAZON COM INC | AMZN | 18,560 | $4.3M | 1.93% |
| 7 | APPLE INC | AAPL | 12,749 | $3.5M | 1.56% |
| 8 | MARVELL TECHNOLOGY INC | MRVL | 40,000 | $3.4M | 1.53% |
| 9 | ALPHABET INC | GOOG | 10,708 | $3.4M | 1.51% |
| 10 | ISHARES TR | 464287598 | 13,379 | $2.8M | 1.27% |
| 11 | BERKSHIRE HATHAWAY INC DEL | BRK-A | 4,851 | $2.4M | 1.10% |
| 12 | DBX ETF TR | 233051200 | 45,628 | $2.2M | 0.99% |
| 13 | OPORTUN FINL CORP | 68376D104 | 396,766 | $2.1M | 0.95% |
| 14 | UBER TECHNOLOGIES INC | UBER | 25,000 | $2.0M | 0.92% |
| 15 | SPDR GOLD TR | GLD | 4,809 | $1.9M | 0.86% |
| 16 | WALMART INC | WMT | 15,851 | $1.8M | 0.80% |
| 17 | ISHARES TR | 464287440 | 13,912 | $1.3M | 0.60% |
| 18 | JPMORGAN CHASE & CO. | VYLD | 3,800 | $1.2M | 0.55% |
| 19 | ALPHABET INC | GOOG | 3,785 | $1.2M | 0.53% |
| 20 | ISHARES TR | 464288281 | 12,175 | $1.2M | 0.53% |