Total reported value
$149.1B
Reporting period: 2026-03-31 · Number of holdings: 10161
SIMPLEX TRADING, LLC disclosed 10161 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $149.1B and a quarterly turnover rate of 31.4%.
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Add 78462F953
+2.2% -$721.6M
Add SPY
+11.4% $827.8M
Trim TSLA
-35.3% -$2.7B
Trim 46090E953
-26.8% -$2.9B
Trim VOO
-33.5% -$2.0B
Trim TSLA
-21.3% -$1.8B
SIMPLEX TRADING is rotating capital out of concentrated tech single-names—TSLA, NVDA, GOOG—and adding to the SPY ETF, a deliberate shift from alpha-seeking stock selection to broad beta exposure. This is a defensive recalibration: reducing single-name risk in the cycle leaders while locking in market participation through the index.
The fund is pricing in a regime shift where the narrow leadership of mega-cap tech is unsustainable, betting that breadth and the median stock will outperform the outliers. The opposing thesis is that the AI-driven momentum cycle remains intact—SIMPLEX is trimming winners too early, leaving excess returns on the table.
The 8,927-holding portfolio with a 100% diversification score and zero position-sizing discipline creates a structural vulnerability: a closet index replication with a contrived momentum tilt. This crowds the strategy into consensus factor exposures and destroys the capacity for meaningful alpha, leaving the fund exposed to a sharp unwind of momentum as a reflexive, not fundamental, trade.
This narrative is produced by AI from publicly available filings and describes past activity only — it is informational, not investment advice.
Showing top 8927 holdings (of 10161 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | ✓ | Spdr S&p 500 ETF Tr | ETF-Large Cap & Growth | 18.39% | +2.53% | +2.17% | |
| 2 | SPY | State Street SPDR S&P 500 ETF Trust | ETF-Large Cap & Growth | 9.44% | +1.97% | +11.41% | |
| 3 | ✓ | Stock-Other | 4.36% | -0.96% | -26.77% | ||
| 4 | ✓ | Stock-Other | 4.02% | — | +8.80% | ||
| 5 | TLT | iShares 20+ Year Treasury Bond ETF | ETF-Gov Bonds | 3.43% | +0.34% | +1.97% | |
| 6 | TLT | iShares 20+ Year Treasury Bond ETF | ETF-Gov Bonds | 2.60% | +0.60% | +27.98% | |
| 7 | TSLA | Tesla, Inc. | Stock-Consumer Disc | 2.29% | -0.67% | -21.34% | |
| 8 | NVDA | NVIDIA Corporation | Stock-Tech | 2.25% | -0.52% | -27.12% | |
| 9 | VOO | Vanguard S&P 500 ETF | ETF-Large Cap & Growth | 2.23% | -0.79% | -33.48% | |
| 10 | TSLA | Tesla, Inc. | Stock-Consumer Disc | 2.07% | -1.19% | -35.28% | |
| 11 | GLD | SPDR Gold Shares | ETF-Commodities | 1.58% | +0.15% | -14.50% | |
| 12 | META | Meta Platforms, Inc. | Stock-Comm Services | 1.58% | -0.13% | -10.77% | |
| 13 | AAPL | Apple Inc. | Stock-Tech | 1.49% | +0.07% | -5.66% | |
| 14 | GOOG | Alphabet Inc. | Stock-Comm Services | 1.39% | -0.19% | -19.53% | |
| 15 | GLD | SPDR Gold Shares | ETF-Commodities | 1.11% | — | -7.72% | |
| 16 | MSFT | Microsoft Corporation | Stock-Tech | 1.04% | — | +35.35% | |
| 17 | MCHX | Marchex, Inc. | Stock-Other | 1.03% | -0.16% | -22.24% | |
| 18 | ✓ | Amazon Com INC | Stock-Other | 0.98% | — | +19.45% | |
| 19 | GOOG | Alphabet Inc. | Stock-Comm Services | 0.97% | -0.33% | -31.32% | |
| 20 | ✓ | Meta Platforms INC | Stock-Other | 0.96% | +0.06% | +3.13% | |
| 21 | SLV | iShares Silver Trust | ETF-Commodities | 0.91% | +0.26% | +11.65% | |
| 22 | ✓ | Stock-Other | 0.69% | +0.03% | -8.37% | ||
| 23 | AMZN | Amazon.com, Inc. | Stock-Consumer Disc | 0.61% | — | +0.70% | |
| 24 | MSFT | Microsoft Corporation | Stock-Tech | 0.59% | -0.02% | +5.47% | |
| 25 | SMHC | VanEck China Semiconductor ETF | ETF-Emerging Markets | 0.55% | — | -30.82% | |
| 26 | ✓ | Stock-Other | 0.52% | — | +12.69% | ||
| 27 | NFLX | Netflix, Inc. | Stock-Comm Services | 0.49% | -0.04% | -24.76% | |
| 28 | SLV | iShares Silver Trust | ETF-Commodities | 0.48% | — | -6.84% | |
| 29 | MU | Micron Technology, Inc. | Stock-Tech | 0.48% | +0.20% | +21.59% | |
| 30 | NFLX | Netflix, Inc. | Stock-Comm Services | 0.48% | -0.03% | -23.77% | |
| 31 | ✓ | Palantir Technologies INC | Stock-Other | 0.48% | -0.13% | -20.11% | |
| 32 | AMD | Advanced Micro Devices, Inc. | Stock-Tech | 0.47% | — | -8.06% | |
| 33 | MU | Micron Technology, Inc. | Stock-Tech | 0.46% | +0.23% | +44.78% | |
| 34 | DIA | State Street SPDR Dow Jones Industrial Average ETF Trust | ETF-Large Cap & Growth | 0.46% | +0.27% | +113.90% | |
| 35 | AVGO | Broadcom Inc. | Stock-Tech | 0.44% | -0.27% | -42.67% | |
| 36 | AMD | Advanced Micro Devices, Inc. | Stock-Tech | 0.40% | -0.15% | -35.45% | |
| 37 | ✓ | Palantir Technologies INC | Stock-Other | 0.39% | -0.23% | -35.37% | |
| 38 | AVGO | Broadcom Inc. | Stock-Tech | 0.35% | -0.16% | -35.42% | |
| 39 | UNH | UnitedHealth Group Incorporated | Stock-Healthcare | 0.35% | -0.17% | -31.16% | |
| 40 | MSTR | Strategy Inc | Stock-Tech | 0.35% | — | +7.83% | |
| 41 | TLT | iShares 20+ Year Treasury Bond ETF | ETF-Gov Bonds | 0.34% | — | +18.70% | |
| 42 | IBIT | iShares Bitcoin Trust ETF | ETF-Crypto | 0.34% | -0.16% | -26.44% | |
| 43 | TSM | Taiwan Semiconductor Manufacturing Company Limited | Stock-Tech | 0.33% | +0.33% | NEW | |
| 44 | UPS | United Parcel Service, Inc. | Stock-Industrials | 0.28% | +0.26% | +531.22% | |
| 45 | SMHC | VanEck China Semiconductor ETF | ETF-Emerging Markets | 0.27% | — | +6.94% | |
| 46 | ORCL | Oracle Corporation | Stock-Tech | 0.26% | — | +16.68% | |
| 47 | IBIT | iShares Bitcoin Trust ETF | ETF-Crypto | 0.26% | — | +14.66% | |
| 48 | ORCL | Oracle Corporation | Stock-Tech | 0.24% | -0.08% | -16.85% | |
| 49 | UPS | United Parcel Service, Inc. | Stock-Industrials | 0.23% | +0.15% | +71.65% | |
| 50 | BABA | Alibaba Group Holding Limited | Stock-Consumer Disc | 0.22% | — | +3.83% |
Performance for Q3 2026
—
Performance Last 4 Quarters
+8.3%
Based on 3 months of available history
Based on 49% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 10161 | $149.1B | 31 | |
| 2025-12-31 | 9381 | $177.4B | 24 | |
| 2025-09-30 | 10359 | $194.9B | 35 | |
| 2025-06-30 | 9904 | $174.6B | 0 | |
| 2025-03-31 | 9739 | $156.2B | 100 | |
| 2024-12-31 | 9701 | $178.6B | 0 | |
| 2024-09-30 | 9646 | $170.4B | 0 | |
| 2024-06-30 | 9954 | $161.9B | 0 | |
| 2024-03-31 | 10037 | $173.1B | 0 | |
| 2023-12-31 | 9984 | $156.4B | 0 | |
| 2023-09-30 | 9858 | $127.1B | 0 | |
| 2023-06-30 | 10161 | $121.6B | 0 | |
| 2023-03-31 | 10304 | $113.8B | 0 | |
| 2022-12-31 | 10527 | $91.9B | 0 | |
| 2022-09-30 | 11393 | $88.5B | 0 | |
| 2022-06-30 | 11351 | $94.1B | 0 | |
| 2022-03-31 | 11559 | $109.4B | 0 | |
| 2021-12-31 | 11473 | $99.0B | 0 | |
| 2021-09-30 | 10900 | $107.1B | 0 | |
| 2021-06-30 | 11103 | $103.5B | 0 | |
| 2021-03-31 | 10782 | $55.7M | 80 | |
| 2020-12-31 | 9759 | $77.2M | 33 | |
| 2020-09-30 | 9133 | $73.5M | 35 | |
| 2020-06-30 | 8797 | $62.7M | 42 | |
| 2020-03-31 | 8558 | $56.7M | 60 | |
| 2019-12-31 | 8124 | $45.7M | 45 | |
| 2019-09-30 | 8137 | $35.2M | 34 | |
| 2019-06-30 | 7921 | $36.6M | 38 | |
| 2019-03-31 | 7930 | $36.0M | 40 | |
| 2018-12-31 | 7843 | $34.1M | 46 | |
| 2018-09-30 | 8157 | $31.1M | 45 | |
| 2018-06-30 | 8107 | $25.5M | 100 | |
| 2018-03-31 | 7854 | $2.3B | 100 | |
| 2017-12-31 | 7835 | $2.3B | 90 | |
| 2017-09-30 | 7700 | $2.4B | 81 | |
| 2017-06-30 | 7601 | $2.3B | 93 | |
| 2017-03-31 | 7552 | $2.3B | 93 | |
| 2016-12-31 | 7341 | $1.7B | 96 | |
| 2016-09-30 | 7290 | $1.5B | 92 | |
| 2016-06-30 | 7353 | $1.5B | 96 | |
| 2016-03-31 | 7138 | $1.3B | 100 | |
| 2015-12-31 | 7080 | $1.3B | 100 | |
| 2015-09-30 | 7200 | $1.4B | 100 | |
| 2015-06-30 | 6805 | $1.2B | 96 | |
| 2015-03-31 | 6525 | $859.9M | 100 | |
| 2014-12-31 | 5612 | $825.5M | 0 |
Simplex Trading, LLC's most significant position changes for 2026-03-31: New buy: Taiwan Semiconductor Manufacturing Company Limited (TSM); New buy: Taiwan Semiconductor Manufacturing Company Limited (TSM); New buy: Amazon.com INC (AMZN); Add: Spdr S&p 500 ETF Tr — shares +2.17%; Add: State Street SPDR S&P 500 ETF Trust (SPY) — shares +11.41%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ✓ | Spdr S&p 500 ETF Tr | +2.5% | +2.17% | Add |
| 2 | SPY | State Street SPDR S&P 500 ETF Trust | +2% | +11.41% | Add |
| 3 | TLT | iShares 20+ Year Treasury Bond ETF | +0.6% | +27.98% | Add |
| 4 | TLT | iShares 20+ Year Treasury Bond ETF | +0.3% | +1.97% | Add |
| 5 | DIA | State Street SPDR Dow Jones Industrial Average ETF Trust | +0.3% | +113.90% | Add |
| 6 | UPS | United Parcel Service, Inc. | +0.3% | +531.22% | Add |
| 7 | SLV | iShares Silver Trust | +0.3% | +11.65% | Add |
| 8 | MU | Micron Technology, Inc. | +0.2% | +44.78% | Add |
| 9 | MU | Micron Technology, Inc. | +0.2% | +21.59% | Add |
| 10 | UPS | United Parcel Service, Inc. | +0.2% | +643.40% | Add |
| 11 | UPS | United Parcel Service, Inc. | +0.2% | +71.65% | Add |
| 12 | GLD | SPDR Gold Shares | +0.2% | -14.50% | Trim |
| 13 | EWT | iShares MSCI Taiwan ETF | +0.1% | +73.54% | Add |
| 14 | XOM | Exxon Mobil Corporation | +0.1% | +53.57% | Add |
| 15 | SNDK | Sandisk Corporation | +0.1% | +210.28% | Add |
| 16 | AAPL | Apple Inc. | +0.1% | -5.66% | Trim |
| 17 | ✓ | Meta Platforms INC | +0.1% | +3.13% | Add |
| 18 | ✓ | 0% | -8.37% | Trim | |
| 19 | MSFT | Microsoft Corporation | 0% | +5.47% | Add |
| 20 | NFLX | Netflix, Inc. | 0% | -23.77% | Trim |
| 21 | NFLX | Netflix, Inc. | 0% | -24.76% | Trim |
| 22 | ✓ | Spdr Ser Tr | -0.1% | -37.20% | Trim |
| 23 | DKS | DICK'S Sporting Goods, Inc. | -0.1% | -58.06% | Trim |
| 24 | ORCL | Oracle Corporation | -0.1% | -16.85% | Trim |
| 25 | BABA | Alibaba Group Holding Limited | -0.1% | -30.56% | Trim |
| 26 | JPM | JPMorgan Chase & Co. | -0.1% | -52.86% | Trim |
| 27 | UNH | UnitedHealth Group Incorporated | -0.1% | -28.53% | Trim |
| 28 | AAPL | Apple INC | -0.1% | -94.39% | Trim |
| 29 | HOOD | Robinhood Markets, Inc. | -0.1% | -45.79% | Trim |
| 30 | MSTR | Strategy Inc | -0.1% | -49.37% | Trim |
| 31 | META | Meta Platforms, Inc. | -0.1% | -10.77% | Trim |
| 32 | ✓ | Palantir Technologies INC | -0.1% | -20.11% | Trim |
| 33 | AMD | Advanced Micro Devices, Inc. | -0.2% | -35.45% | Trim |
| 34 | DIA | State Street SPDR Dow Jones Industrial Average ETF Trust | -0.2% | -64.30% | Trim |
| 35 | MCHX | Marchex, Inc. | -0.2% | -22.24% | Trim |
| 36 | IBIT | iShares Bitcoin Trust ETF | -0.2% | -26.44% | Trim |
| 37 | AVGO | Broadcom Inc. | -0.2% | -35.42% | Trim |
| 38 | UNH | UnitedHealth Group Incorporated | -0.2% | -31.16% | Trim |
| 39 | GOOG | Alphabet Inc. | -0.2% | -19.53% | Trim |
| 40 | ✓ | Palantir Technologies INC | -0.2% | -35.37% | Trim |
| 41 | AVGO | Broadcom Inc. | -0.3% | -42.67% | Trim |
| 42 | GOOG | Alphabet Inc. | -0.3% | -31.32% | Trim |
| 43 | NVDA | NVIDIA Corporation | -0.5% | -27.12% | Trim |
| 44 | TSLA | Tesla, Inc. | -0.7% | -21.34% | Trim |
| 45 | VOO | Vanguard S&P 500 ETF | -0.8% | -33.48% | Trim |
| 46 | ✓ | -1% | -26.77% | Trim | |
| 47 | TSLA | Tesla, Inc. | -1.2% | -35.28% | Trim |
| 48 | TSM | Taiwan Semiconductor Manufacturing Company Limited | — | NEW | New buy |
| 49 | TSM | Taiwan Semiconductor Manufacturing Company Limited | — | NEW | New buy |
| 50 | AMZN | Amazon.com INC | — | NEW | New buy |
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