Mattson Financial Services
Mattson Financial Services reported 235 stocks worth $478M in its 13F filing for Q2 2026, filed Aug 4, 2026. Its largest holdings are NVDA (3.7%), SPYM (3.6%) and DMBS (3.6%). Compared with Q1 2026, the fund opened new positions in XTWY, AIS and CRWD, added to NVDA, SPYM and DMBS, trimmed AMZN, GOOG and MSFT and sold out of XTRE, ARKW and VRTX.
Holdings
| # | Stock | Value | Weight | Shares | Change | Shares, 8 qtrs | Held |
|---|---|---|---|---|---|---|---|
| 1 |  NVDA Nvidia Corporation | $17.9M | 3.7% | 86K | +17K (+25%) | 8 of 8 | |
| 2 |  SPYM Spdr Series Trust | $17.4M | 3.6% | 197K | +13K (+7%) | 8 of 8 | |
| 3 |  DMBS Doubleline ETF Trust | $17.3M | 3.6% | 355K | +27K (+8%) | 8 of 8 | |
| 4 |  AAPL Apple Inc | $13.4M | 2.8% | 40K | +146 (+0%) | 8 of 8 | |
| 5 |  AMZN Amazon Com Inc | $13.2M | 2.8% | 53K | −3,849 (−7%) | 8 of 8 | |
| 6 |  GOOG Alphabet Inc | $12M | 2.5% | 34K | −2,333 (−6%) | 8 of 8 | |
| 7 |  MSFT Microsoft Corp | $10.6M | 2.2% | 26K | −2,187 (−8%) | 8 of 8 | |
| 8 |  XTEN Bondbloxx ETF Trust | $9.9M | 2.1% | 220K | +127K (+137%) | 6 of 8 | |
| 9 |  META Meta Platforms Inc | $9M | 1.9% | 13K | +345 (+3%) | 8 of 8 | |
| 10 |  XSVN Bondbloxx ETF Trust | $8.1M | 1.7% | 172K | +58K (+50%) | 8 of 8 |
Positions at Jun 30, 2026, as reported. Change is against the fund's Q1 2026 filing; weight is the share of the fund's reported stocks.
Sold out
held in Q1 2026, gone in Q2 2026| Stock | Value last quarter | Shares sold |
|---|---|---|
 XTRE Bondbloxx ETF Trust | $4.9M | 98K |
 ARKW ARK Next Generation | $3.8M | 31K |
 VRTX Vertex Pharmaceuticals I | $1.7M | 3,861 |
 PODD Insulet Corp | $1.4M | 6,815 |
 FLEX Flex Ltd | $1.1M | 16K |
🔒 Free account: see all 19.
Reported value
last 8 quartersThe value of the US stocks the fund reported, at quarter end prices. It moves with the market as well as with buying and selling.
Filings for Q2 2026
straight from the SEC| Filed | Form | Quarter | |
|---|---|---|---|
| Aug 4, 2026 | 13F-HR | Q2 2026 | SEC filing ↗ |
Other superinvestors
All hedge fund holdings →Mattson Financial Services 13F FAQ
What does Mattson Financial Services own?
Mattson Financial Services reported 235 stocks worth $478M in its 13F filing for Q2 2026, filed Aug 4, 2026. Its largest holdings are NVDA (3.7%), SPYM (3.6%) and DMBS (3.6%). The table above lists every position in the filing (the top 10 without an account).
What did Mattson Financial Services buy and sell in Q2 2026?
Compared with Q1 2026: 22 new positions, 138 added to, 67 trimmed and 19 sold out. New positions include XTWY, AIS and CRWD. It sold all of XTRE, ARKW and VRTX.
When will Mattson Financial Services file its next 13F?
Holdings as of Sep 30, 2026 are due by Nov 16, 2026. The filing appears on this page within minutes of reaching the SEC.
How much is Mattson Financial Services's portfolio worth?
The Q2 2026 filing reports $478M in US stocks. That leaves out cash, bonds, short positions and most foreign holdings, so the fund's total assets are usually larger.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Holdings come from the fund's SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. The fund may have changed its positions since. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.