Stocks/Funds/CIK 1954929

Summa Corp.

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1954929
Assets
$242M
+39.9% YoY
Holdings
83
Lifetime alpha vs market
+2.37% annual
Average hold time
1.6 yr
median 1.5 yr

Quarterly history

Cum return +48% vs S&P +41% · α +8% lifetimeAUM $242M · peak $242MFlow $25M (+11%)2023-122024-062024-122025-062025-122026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-13.89%
trims when stocks drop
when a holding falls −10%+
Middle response
-3.40%
baseline attrition
Rally response
+3.93%
adds into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
NVDANVIDIA Corporation$111M45.8%+60.9%2.5 yr
AMDAdvanced Micro Devices, $25M10.3%+98.0%2.5 yr
MSFTMicrosoft Corporation$8M3.5%-0.6%2.5 yr
SPYState Street SPDR S&P 50$7M3.0%+17.6%1.0 yr
QUALiShares MSCI USA Quality$5M2.2%0.3 yr
IWFiShares Russell 1000 Gro$5M2.0%1.5 yr
AMZNAmazon.com, Inc.$4M1.8%+9.5%2.5 yr
QCOMQUALCOMM Incorporated$4M1.8%-14.2%2.5 yr
MRVLMarvell Technology, Inc.$4M1.7%+61.3%2.5 yr
VOOVanguard S&P 500 ETF$4M1.7%0.3 yr
DBEFXtrackers MSCI EAFE Hedg$4M1.6%1.0 yr
AAPLApple Inc.$3M1.3%+14.7%2.5 yr
GOOGLAlphabet Inc.$3M1.2%2.5 yr
IWDiShares Russell 1000 Val$3M1.2%1.0 yr
BRK-BBerkshire Hathaway Inc.$2M1.0%2.5 yr

Portfolio composition (YoY)

Industry mix
Semiconductors60.4%-1.0pp$146M
Asset Management19.5%+16.7pp$47M
Software - Infrastructure3.7%-2.6pp$9M
Specialty Retail2.0%-4.3pp$5M
Internet Content & Information2.0%+1.1pp$5M
Asset Management - Bonds2.0%-0.0pp$5M
Financial - Credit Services1.3%-1.2pp$3M
Consumer Electronics1.3%-0.0pp$3M
Software - Application1.1%-0.5pp$3M
Drug Manufacturers - General1.0%+0.1pp$2M
Country
US99.1%+4.7pp
TW0.5%
CN0.2%-5.3pp
CA0.1%-0.1pp
MX0.1%
Top 5: 64.8% · Top 10: 73.8% · Top 25: 87.1%

Winners

TickerPrev $PnLYoY %
NVDA$85M+0.05B60.9%
AMD$12M+0.01B98.0%
VLO$5M+0.00B92.6%
MRVL$3M+0.00B61.3%
WMT$1M+0.00B42.8%

Losers

TickerPrev $PnLYoY %
QCOM$6M-0.00B-14.2%
OPRT$3M-0.00B-16.0%
MSFT$11M-0.00B-0.6%
UBER$2M-0.00B-1.3%

Top buys this quarter · 15

SPY State Street SPDR S&P 500 ETF +$6M
MSFT Microsoft Corporation+$8M
CX CEMEX, S.A.B. de C.V.new+$0M
MRVL Marvell Technology, Inc.+$0M
ORCL Oracle Corporation+$0M
AMD Advanced Micro Devices, Inc.+$25M
UBER Uber Technologies, Inc.+$2M
META Meta Platforms, Inc.+$1M
AMZN Amazon.com, Inc.+$4M
AXP American Express Company+$0M

Top sells this quarter · 15

T AT&T Inc.$0M
NOW ServiceNow, Inc.exit$0M
WMT Walmart Inc.$2M
QCOM QUALCOMM Incorporated$0M
XOM Exxon Mobil Corporation$1M
AAPL Apple Inc.$0M
AVGO Broadcom Inc.$0M
JNJ Johnson & Johnson$1M
WFC Wells Fargo & Company$0M
CRM Salesforce, Inc.$0M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$242M83+42.38%+17.59%+24.79%+0.02B
2025-12-31$233M77+34.26%+17.72%+16.54%-0.00B
2025-09-30$227M76+33.63%+17.52%+16.11%+0.01B
2025-06-30$192M76+14.90%+14.94%-0.05%-0.03B
2025-03-31$173M59-10.02%+8.30%-18.33%-0.01B
2024-12-31$204M61+18.45%+24.89%-6.44%-0.01B
2024-09-30$209M64-1.60%+5.75%-7.35%+0.01B
2024-06-30$206M60+1.80%+4.38%-2.58%+0.02B
2024-03-31$183M59+15.68%+10.39%+5.29%+0.02B
2023-12-31$143M60