Terminal · Institutions

Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.

Mainstream Capital Management LLC 13F Holdings -- Portfolio & Top Positions (2026-03-31)

Mainstream Capital Management LLC (CIK 2043084) reported $149.1M across 88 reported positions in its SEC 13F filing for 2026-03-31. Largest positions: JPST ($20.9M, 14.00%), AAPL ($9.0M, 6.05%), GSST ($8.9M, 5.97%), AMZN ($6.5M, 4.35%), GOOG ($5.8M, 3.89%). Source: SEC Form 13F.

RankTickerCompanyValue% PortfolioSharesAction
1JPSTJPMORGAN ULTRA-SHORT INCOME ETF$20.9M14.00%412,339Added
2AAPLAPPLE INC COM$9.0M6.05%35,554Trimmed
3GSSTGOLDMAN SACHS ULTRA SHORT BOND ETF$8.9M5.97%176,075Added
4AMZNAMAZON COM INC COM$6.5M4.35%31,153Trimmed
5GOOGALPHABET INC CAP STK CL C$5.8M3.89%20,238Added
6NVDANVIDIA CORPORATION COM$4.8M3.25%27,741Added
7METAMETA PLATFORMS INC CL A$4.3M2.90%7,565Trimmed
8IWFISHARES RUSSELL 1000 GROWTH ETF$3.7M2.49%8,691Trimmed
9IWDISHARES RUSSELL 1000 VALUE ETF$3.2M2.13%14,846Trimmed
10IVVISHARES CORE S&P 500 ETF$2.9M1.94%4,423Trimmed
11GLDSPDR GOLD SHARES$2.7M1.79%6,185Added
12GOOGLALPHABET INC CAP STK CL A$2.6M1.75%9,060Trimmed
13JPMJPMORGAN CHASE & CO COM$2.6M1.73%8,755Added
14BRK/BBERKSHIRE HATHAWAY INC DEL CL B NEW$2.6M1.73%5,396Added
15COSTCOSTCO WHOLESALE CORPORATION COM$2.3M1.56%2,328Added
16SPYSTATE STREET SPDR S&P 500 ETF$2.3M1.52%3,473Hold
17TSLATESLA INC COM$2.2M1.49%5,990Added
18NFLXNETFLIX INC. COM$2.2M1.48%23,016Added
19LLYELI LILLY & CO COM$2.1M1.41%2,292Added
20MSFTMICROSOFT CORP COM$2.0M1.34%5,393Added
21TJXTJX COS INC NEW COM$2.0M1.32%12,307Added
22GLWCORNING INC COM$1.9M1.29%14,181Added
23CAVACAVA GROUP INC COM$1.7M1.16%21,324Added
24VOEVANGUARD MID-CAP VALUE ETF$1.7M1.12%9,041Trimmed
25WMTWALMART INC COM$1.6M1.10%13,142Added

Source: SEC Form 13F filings · as of 2026-03-31