Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$168M |
| 2 |
NVIDIA
NVDA
|
+$141M |
| 3 |
TSMC
TSM
|
+$121M |
| 4 |
Meta Platforms (Facebook)
META
|
+$107M |
| 5 |
SPDR Gold Trust
GLD
|
+$103M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$174M |
| 2 |
Western Digital
WDC
|
+$87.7M |
| 3 |
Broadcom
AVGO
|
+$62.2M |
| 4 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$52M |
| 5 |
Netflix
NFLX
|
+$44.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.62% |
| 2 | Communication Services | 0.22% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Healthcare | 0.2% |
| 5 | Industrials | 0.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
5876
ProShares Ultra Yen
YCL
$31.9M
| $50.3K | ﹤0.01% |
2,738
+421
| +18% | +$7.96K |
|
5877
CALL
Timken Company
TKR
$9.84B
| $50.3K | ﹤0.01% |
500
-300
| -38% | -$29.8K |
|
5878
PUT
Erie Indemnity
ERIE
$11B
| $50.3K | ﹤0.01% |
+200
| New | +$53.7K |
|
5879
Aaon
AAON
$8.78B
| $50.2K | ﹤0.01% |
+607
| New | +$55.2K |
|
5880
CALL
LifeMD
LFMD
$188M
| $50.2K | ﹤0.01% |
13,900
-15,700
| -53% | -$54.3K |
|
5881
PUT
HealthEquity
HQY
$8.02B
| $50.1K | ﹤0.01% |
600
-1,600
| -73% | -$131K |
|
5882
PUT
Crown Holdings
CCK
$13B
| $50.1K | ﹤0.01% |
500
-1,600
| -76% | -$171K |
|
5883
Direxion Daily Homebuilders & Supplies Bull 3X ETF
NAIL
$553M
| $50.1K | ﹤0.01% |
+1,320
| New | +$76.4K |
|
5884
Duos Technologies
DUOT
$258M
| $50.1K | ﹤0.01% |
+7,297
| New | +$64.9K |
|
5885
CALL
Equity Lifestyle Properties
ELS
$12.7B
| $49.9K | ﹤0.01% |
800
-200
| -20% | -$13K |
|
|
5886
PUT
Equity Lifestyle Properties
ELS
$12.7B
| $49.9K | ﹤0.01% |
800
-1,300
| -62% | -$84.2K |
|
5887
PUT
Lincoln Electric
LECO
$13.7B
| $49.8K | ﹤0.01% |
200
+100
| +100% | +$26.7K |
|
|
BMNU
5888
T-REX 2X Long BMNR Daily Target ETF
BMNU
$260M
| $49.7K | ﹤0.01% |
2,816
+938
| +50% | +$30.1K |
|
5889
PUT
Arcus Biosciences
RCUS
$3.77B
| $49.7K | ﹤0.01% |
2,300
-400
| -15% | -$8.64K |
|
5890
FerroAtlántica
GSM
$639M
| $49.7K | ﹤0.01% |
12,053
-91,794
| -88% | -$442K |
|
5891
Arhaus
ARHS
$1.05B
| $49.7K | ﹤0.01% |
+7,324
| New | +$66.5K |
|
|
WTMY
5892
PUT
WisdomTree High Income Laddered Municipal Fund
WTMY
$5.04M
| $49.6K | ﹤0.01% |
1,400
-200
| -13% | -$5.12K |
|
5893
Schwab US Large-Cap Growth ETF
SCHG
$59.6B
| $49.5K | ﹤0.01% |
+1,701
| New | +$52.9K |
|
5894
Sinclair Inc
SBGI
$999M
| $49.4K | ﹤0.01% |
3,818
-45,461
| -92% | -$660K |
|
5895
PUT
Murphy USA
MUSA
$11.4B
| $49.4K | ﹤0.01% |
100
-100
| -50% | -$42.8K |
|
5896
CALL
Roundhill Ball Metaverse ETF
METV
$215M
| $49.3K | ﹤0.01% |
1,200
| – | – |
|
5897
PUT
Procure Space ETF
UFO
$631M
| $49.3K | ﹤0.01% |
1,100
-4,700
| -81% | -$211K |
|
5898
Protalix BioTherapeutics
PLX
$191M
| $49.2K | ﹤0.01% |
+22,671
| New | +$56.3K |
|
5899
CALL
SelectQuote
SLQT
$126M
| $49.2K | ﹤0.01% |
78,100
+72,700
| +1,346% | +$76.3K |
|
5900
CALL
Patria Investments
PAX
$1.74B
| $49.1K | ﹤0.01% |
3,900
-3,000
| -43% | -$42.2K |
|
Similar funds
Simplex Trading's Q1 2026 Portfolio in Review
As of Q1 2026, Simplex Trading held 10,500 positions worth $149B, down 16% from $177B the previous quarter. Its ten largest holdings account for 51% of the portfolio.
Simplex Trading withdrew a net $18.1B in Q1 2026, closing 1,574 positions and reducing 3,926 holdings. Its most notable exit was Direxion Daily Semiconductor Bull 3X ETF, an estimated $52M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.62% of assets, up from 0.59% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amazon worth $159M.
- Simplex Trading's largest Q1 2026 buy was Amazon: 764,884 shares worth $159M.
- Simplex Trading added most to NVIDIA in Q1 2026, an estimated $141M increase.
- Simplex Trading's biggest Q1 2026 reduction was Apple, cutting an estimated $174M.
- Simplex Trading fully exited Direxion Daily Semiconductor Bull 3X ETF in Q1 2026, selling an estimated $52M.
- Simplex Trading's ten largest holdings make up 51% of its $149B portfolio in Q1 2026.
- Simplex Trading opened 2,156 new positions and closed 1,574 in Q1 2026.
- Simplex Trading's portfolio value fell 16% quarter-over-quarter to $149B.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.