Top Institutional Investors

Mainstream Capital Management LLC — 13F Holdings & Portfolio

CIK 2043084 · latest 13F-HR filed 2026-07-15

Backtest portfolio

Mainstream Capital Management LLC manages $166.1M in 13F-reported U.S. long-equity assets across 90 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are JPST (12.25%), AAPL (5.94%), GSST (5.71%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 4 new positions, exited 2, added to 50, and trimmed 17.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

Filer Information
Address
3435 WILSHIRE BLVD
SUITE 1100
LOS ANGELES, CA 90010
Phone
(213) 365-6773
Filing Manager
Mainstream Capital Management LLC
LOS ANGELES, CA
Signatory
Dixon Karmindro
Managing Partner
Loading holdings…
AUM

$166.1M

Long-equity book

Holdings

90

Distinct positions

Period

2026-06-30

Filed 2026-07-15

Q/Q Activity

+4 / −2 / ↑50 / ↓17

vs 2026-03-31

Firm Profile & Key People
Name Title / Status Ownership Type

Top Adds (vs prior quarter)

  • CORNING INC COM$1.7M +89.3%
  • ADVANCED MICRO DEVICES INC COM$1.7M +262.9%
  • PALO ALTO NETWORKS INC COM$1.4M +111.9%
  • ALPHABET INC CAP STK CL C$1.3M +23.0%
  • CROWDSTRIKE HLDGS INC CL A$1.3M +94.8%
Show all 50 →

Top Trims

  • SPDR GOLD SHARES-$603.9K -22.7%
  • NETFLIX INC. COM-$568.6K -25.7%
  • JPMORGAN EQUITY PREMIUM INCOME ETF-$448.7K -42.0%
  • HOME DEPOT INC COM-$422.9K -36.8%
  • CHIPOTLE MEXICAN GRILL INC COM-$263.3K -29.9%
Show all 17 →

New Positions

  • INTERNATIONAL BUSINESS MACHS COM$1.9M
  • CISCO SYS INC COM$262.7K
  • SCHWAB FUNDAMENTAL U.S. LARGE COMPANY ETF$207.2K
  • ISHARES BIOTECHNOLOGY ETF$204.6K
Show all 4 →

Exited Positions

  • HONEST CO INC COM$694.0K
  • DISNEY WALT CO COM$230.3K
Show all 2 →
All Holdings

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 JPMORGAN ULTRA-SHORT INCOME ETF JPST 46641Q837 $20.3M 12.25% 402,230 SH
2 APPLE INC COM AAPL 037833100 $9.9M 5.94% 34,109 SH
3 GOLDMAN SACHS ULTRA SHORT BOND ETF GSST 381430230 $9.5M 5.71% 187,377 SH
4 AMAZON COM INC COM AMZN 023135106 $7.4M 4.44% 30,969 SH
5 ALPHABET INC CAP STK CL C GOOG 02079K107 $7.1M 4.30% 20,215 SH
6 NVIDIA CORPORATION COM NVDA 67066G104 $5.5M 3.33% 27,621 SH
7 ISHARES RUSSELL 1000 GROWTH ETF IWF 464287614 $4.3M 2.56% 34,265 SH
8 META PLATFORMS INC CL A META 30303M102 $4.2M 2.55% 7,503 SH
9 CORNING INC COM GLW 219350105 $3.6M 2.20% 14,289 SH
10 ISHARES RUSSELL 1000 VALUE ETF IWD 464287598 $3.5M 2.13% 14,598 SH
11 ISHARES CORE S&P 500 ETF IVV 464287200 $3.3M 1.96% 4,340 SH
12 ALPHABET INC CAP STK CL A GOOGL 02079K305 $3.2M 1.90% 8,840 SH
13 JPMORGAN CHASE & CO COM JPM 46625H100 $2.9M 1.72% 8,738 SH
14 BERKSHIRE HATHAWAY INC DEL CL B NEW BRK.B 084670702 $2.7M 1.63% 5,400 SH
15 ELI LILLY & CO COM LLY 532457108 $2.7M 1.63% 2,250 SH
16 CROWDSTRIKE HLDGS INC CL A CRWD 22788C105 $2.6M 1.59% 3,458 SH
17 PALO ALTO NETWORKS INC COM PANW 697435105 $2.6M 1.58% 7,713 SH
18 STATE STREET SPDR S&P 500 ETF SPY 78462F103 $2.6M 1.56% 3,473 SH
19 TESLA INC COM TSLA 88160R101 $2.5M 1.52% 5,985 SH
20 ADVANCED MICRO DEVICES INC COM AMD 007903107 $2.3M 1.41% 4,030 SH
21 COSTCO WHOLESALE CORPORATION COM COST 22160K105 $2.2M 1.31% 2,323 SH
22 SPDR GOLD SHARES GLD 78463V107 $2.1M 1.24% 5,585 SH
23 MICROSOFT CORP COM MSFT 594918104 $2.0M 1.21% 5,398 SH
24 VANGUARD INFORMATION TECHNOLOGY ETF VGT 92204A702 $1.9M 1.16% 16,107 SH
25 GOLDMAN SACHS GROUP INC COM GS 38141G104 $1.9M 1.15% 1,890 SH
26 INTERACTIVE BROKERS GROUP INC COM CL A IBKR 45841N107 $1.9M 1.15% 21,923 SH
27 GE VERNOVA INC COM GEV 36828A101 $1.9M 1.15% 1,619 SH
28 TJX COS INC NEW COM TJX 872540109 $1.9M 1.13% 12,340 SH
29 INTERNATIONAL BUSINESS MACHS COM IBM 459200101 $1.9M 1.12% 6,637 SH
30 ISHARES MSCI USA QUALITY FACTOR ETF QUAL 46432F339 $1.8M 1.09% 8,215 SH
31 VANGUARD MID-CAP VALUE ETF VOE 922908512 $1.8M 1.07% 9,032 SH
32 VANGUARD MID-CAP GROWTH ETF VOT 922908538 $1.8M 1.06% 5,764 SH
33 CAVA GROUP INC COM CAVA 148929102 $1.7M 1.01% 21,381 SH
34 NETFLIX INC. COM NFLX 64110L106 $1.6M 0.99% 23,031 SH
35 TOAST INC CL A TOST 888787108 $1.6M 0.95% 56,794 SH
36 SCHWAB CHARLES CORP COM SCHW 808513105 $1.5M 0.89% 16,030 SH
37 EATON CORP PLC SHS ETN G29183103 $1.5M 0.89% 3,459 SH
38 WALMART INC COM WMT 931142103 $1.5M 0.88% 12,939 SH
39 ISHARES MSCI EAFE VALUE ETF EFV 464288877 $1.4M 0.85% 18,547 SH
40 DOVER CORP COM DOV 260003108 $1.3M 0.77% 5,688 SH
41 LEGALZOOM COM INC COM LZ 52466B103 $1.2M 0.74% 200,000 SH
42 ISHARES MSCI EAFE GROWTH ETF EFG 464288885 $1.2M 0.74% 9,832 SH
43 OREILLY AUTOMOTIVE INC COM ORLY 67103H107 $1.2M 0.70% 12,556 SH
44 ISHARES U.S. TECHNOLOGY ETF IYW 464287721 $1.1M 0.69% 4,515 SH
45 VISA INC COM CL A V 92826C839 $1.1M 0.66% 3,210 SH
46 BROADCOM INC COM AVGO 11135F101 $1.1M 0.64% 2,827 SH
47 APPLIED MATLS INC COM AMAT 038222105 $1.1M 0.64% 1,468 SH
48 ISHARES CORE MSCI EMERGING MARKETS ETF IEMG 46434G103 $972.8K 0.59% 11,743 SH
49 ISHARES S&P 500 GROWTH ETF IVW 464287309 $945.0K 0.57% 6,871 SH
50 CHEVRON CORPORATION COM CVX 166764100 $846.7K 0.51% 5,108 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-07-15 $166.1M 90 0002043084-26-000003
2026-03-31 2026-04-17 $149.1M 88 0002043084-26-000002
2025-12-31 2026-01-21 $152.8M 88 0002043084-26-000001