Mainstream Capital Management LLC

Q3 2025 13F-HR Holdings

Location
Los Angeles, CA
Holdings as of
9/30/2025
Date filed
10/20/2025
Form type
13F-HR
Num holdings
87
Total value ($000)
$150,410
Net value change ($000)
+12,898 (9.4%)
New positions
6
Sold out positions
3
Turnover %
4.9%
Sector allocation + QoQ delta (equities-only)
Prev filing: 7/15/2025 Next filing: 1/21/2026 SEC filing

Snapshot: Change Analysis

Compared to Q2 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
GSST 1,755 NEW
AAPL 1,457 18.8%
GOOGL 1,359 37.2%
ETN 1,156 NEW
UBER 1,146 NEW
TSLA 913 54.7%
NVDA 893 20.7%
DOV 893 NEW
GOOGL 634 36.6%
BABA 539 59.8%
Top Reduces (Value $000, Stocks/ETFs)
UNH -1,009 -100.0%
BXSL -506 -100.0%
CMG -465 -29.7%
CAVA -339 -20.3%
HNST -333 -27.7%
JEPI -297 -15.0%
NFLX -274 -9.0%
CRM -263 -15.0%
SCHD -233 -100.0%
T -94 -11.8%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type