13F filer

Mainstream Capital Management

As of Sep 30, 2026 Filed Oct 23, 2026 CIK 2043084 SEC filings ↗
13F Value
$169.9M
Positions
302
Top Position
JPST10.0%
Top 5
30.8%

Latest filing changes

vs Jun 30, 2026
2 MSFT Microsoft +31.1%+$860K
5 NVDA NVIDIA +10.5%+$663K
Holdings302
# Trend (4Q)
1 JPST 10.0% $16.9M -16.4% 336.3K 12.2% ETF
2 AAPL 6.6% $11.2M -1.3% 33.7K 5.9% Common Stock
3 GSST 5.6% $9.6M +1.0% 189.3K 5.7% ETF
4 AMZN 4.5% $7.7M -0.7% 30.7K 4.4% Common Stock
5 NVDA 4.1% $7.0M +10.5% 30.5K 3.3% Common Stock
6 GOOG 3.9% $6.6M -3.5% 19.5K 4.3% Common Stock
7 META 3.2% $5.5M +0.7% 7.6K 2.5% Common Stock
8 CRWD 2.2% $3.7M +1.5% 14.0K 1.6% Common Stock
9 MSFT 2.1% $3.6M +31.1% 7.1K 1.2% Common Stock
10 IVV 1.8% $3.1M -7.3% 4.0K 2.0% ETF
11 PANW 1.8% $3.0M -1.9% 7.6K 1.6% Common Stock
12 GOOGL
Filing details
  • 02079K305 Sep 30, 2026 8,712 reported quantity $2,997,625 reported value
1.8% $3.0M -1.4% 8.7K 1.9% Common Stock
13 IWF 1.7% $2.9M -33.4% 22.8K 2.6% ETF
14 JPM 1.7% $2.8M -2.6% 8.5K 1.7% Common Stock
15 BRK.B
Filing details
  • 084670702 Sep 30, 2026 5,386 reported quantity $2,682,062 reported value
1.6% $2.7M -0.3% 5.4K 1.6% Common Stock
16 LLY 1.6% $2.6M +1.2% 2.3K 1.6% Common Stock
17 GLW 1.4% $2.4M +9.1% 15.6K 2.2% Common Stock
18 AMD 1.4% $2.4M -3.2% 3.9K 1.4% Common Stock
19 SPY 1.3% $2.3M -13.9% 3.0K 1.6% ETF
20 IWD 1.3% $2.3M -37.5% 9.1K 2.1% ETF
Change compares with the prior filing. Prior % is the share of the portfolio in that filing. Trend shows the quantity held in each of the last four filings: green rose, red fell, grey unchanged.
Exited in Latest Filing3
# Holding Prior % Prior Value Change Prior Quantity Trend (4Q) Type
Compared with the immediately prior published filing (Jun 30, 2026). Prior values are shown for context and are not included in current totals.