October Effect
October Effect reported 62 stocks worth $98.3M in its 13F filing for Q3 2026, filed Oct 20, 2026. Its largest holdings are NVDA (8.5%), WDC (5.5%) and META (5.1%). Compared with Q2 2026, the fund opened new positions in CAIE, UEC and FUBO, added to BIL, QQQI and SPY, trimmed NVDA, WDC and AMD and sold out of SPCX, NBIS and XAR.
Holdings
| # | Stock | Value | Weight | Shares | Change | Shares, 6 qtrs | Held |
|---|---|---|---|---|---|---|---|
| 1 |  NVDA Nvidia Corporation | $8.3M | 8.5% | 36K | −300 (−1%) | 6 of 6 | |
| 2 |  WDC Western Digital Corp | $5.4M | 5.5% | 12K | −740 (−6%) | 3 of 6 | |
| 3 |  META Meta Platforms Inc | $5M | 5.1% | 6,916 | No change | 6 of 6 | |
| 4 |  BIL ST Stert Spdr Blmbg 1 3 | $4.6M | 4.7% | 51K | +7,658 (+18%) | 6 of 6 | |
| 5 |  AMD Advanced Micro Devices Inc | $4.4M | 4.5% | 7,172 | −50 (−1%) | 6 of 6 | |
| 6 |  INTC Intel Corp | $4.2M | 4.2% | 35K | −2,369 (−6%) | 3 of 6 | |
| 7 |  QQQI Neos ETF Trust | $3.7M | 3.7% | 66K | +50K (+324%) | 4 of 6 | |
| 8 |  RDDT Reddit Inc | $3.6M | 3.6% | 25K | −3,021 (−11%) | 4 of 6 | |
| 9 |  GE GE Aerospace | $3.5M | 3.5% | 11K | No change | 6 of 6 | |
| 10 |  SPY Spdr S&P 500 ETF TR | $3.4M | 3.5% | 4,473 | +378 (+9%) | 6 of 6 |
Positions at Sep 30, 2026, as reported. Change is against the fund's Q2 2026 filing; weight is the share of the fund's reported stocks.
Sold out
held in Q2 2026, gone in Q3 2026| Stock | Value last quarter | Shares sold |
|---|---|---|
 SPCX Space Exploration Techn Corp Class A Com Stk | $1.1M | 6,475 |
 NBIS Nebius Group | $1.1M | 3,900 |
 XAR Spdr Series Trust | $694K | 2,444 |
 MGY MAGNOLIA OIL & GAS CORP | $665K | 26K |
 SFM Sprouts Fmrs Mkt Inc | $575K | 6,800 |
🔒 Free account: see all 6.
Reported value
last 6 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 Q3 2026
straight from the SEC| Filed | Form | Quarter | |
|---|---|---|---|
| Oct 20, 2026 | 13F-HR | Q3 2026 | SEC filing ↗ |
Other superinvestors
All hedge fund holdings →October Effect 13F FAQ
What does October Effect own?
October Effect reported 62 stocks worth $98.3M in its 13F filing for Q3 2026, filed Oct 20, 2026. Its largest holdings are NVDA (8.5%), WDC (5.5%) and META (5.1%). The table above lists every position in the filing (the top 10 without an account).
What did October Effect buy and sell in Q3 2026?
Compared with Q2 2026: 4 new positions, 20 added to, 27 trimmed and 6 sold out. New positions include CAIE, UEC and FUBO. It sold all of SPCX, NBIS and XAR.
When will October Effect file its next 13F?
Holdings as of Dec 31, 2026 are due by Feb 15, 2027. The filing appears on this page within minutes of reaching the SEC.
How much is October Effect's portfolio worth?
The Q3 2026 filing reports $98.3M 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.