Managers / Q1 2026
Mainstream Capital Management LLC
CIK 0002043084 · 3435 WILSHIRE BLVD, SUITE 1100, LOS ANGELES, CA, 90010 · 213-365-6773
Summary
Mainstream Capital Management LLC reported $149M in U.S.-listed holdings across 88 positions for Q1 2026.
Its largest position, Jpmorgan Ultra Short Income Etf, represents 14.0% of the portfolio.
Compared with Q4 2025, the fund opened 5 new positions and exited 5.
Portfolio Metrics
Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.
Reported Value by Quarter
Portfolio Composition
- Common Stock · 54.8% · $82M
- ETP · 43.1% · $64M
- Other · 1.3% · $2M
- ADR · 0.7% · $1M
Quarter-over-Quarter Changes full breakdown →
vs Q4 2025 (amended baseline)
| Issuer | Move | Share Δ | Shares now | Value Δ | Value now |
|---|---|---|---|---|---|
| TOSTTOAST INC CL A | NEW | +57.4K | 57.4K | +$2M | $2M |
| GEVGE VERNOVA INC COM | NEW | +1.4K | 1.4K | +$1M | $1M |
| ATDATI INC COM | NEW | +1.7K | 1.7K | +$247,282 | $247,282 |
| ISHARES MSCI EMERGING MARKETS EX CHINA ETF | NEW | +2.6K | 2.6K | +$205,381 | $205,381 |
| SCHWAB US DIVIDEND EQUITY ETF | NEW | +6.6K | 6.6K | +$203,991 | $203,991 |
| CRMSALESFORCE INC COM | SOLD OUT | −6.0K | 0 | −$2M | $0 |
| BXPBXP INC COM | SOLD OUT | −12.4K | 0 | −$837,967 | $0 |
| NKENIKE INC CL B | SOLD OUT | −3.9K | 0 | −$245,857 | $0 |
Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.
Holdings — Q1 2026
Filing History
| Quarter | Reported Value | Positions | Filed | Type | Links |
|---|---|---|---|---|---|
| Q1 2026 | $149M | 88 | Apr 17, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q4 2025 | $153M | 88 | Jan 21, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q3 2025 | $150M | 87 | Oct 20, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q2 2025 | $138M | 84 | Jul 15, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q1 2025 | $126M | 86 | Apr 28, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q4 2024 | $143M | 322 | Feb 6, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q3 2024 | $118M | 84 | Oct 31, 2024 | 13F-HR | changes · EDGAR ↗ |
13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.