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 | |
|---|---|---|---|---|---|---|
7626
BuzzFeed
BZFD
$104M
| $7.28K | ﹤0.01% |
11,958
-15,655
| -57% | -$12.8K |
|
|
MRAL
7627
GraniteShares 2x Long MARA Daily ETF
MRAL
$56.6M
| $7.27K | ﹤0.01% |
+253
| New | +$10.5K |
|
7628
CALL
Safety Insurance
SAFT
$1.06B
| $7.26K | ﹤0.01% |
100
-400
| -80% | -$30.4K |
|
7629
CALL
Avient
AVNT
$3.44B
| $7.26K | ﹤0.01% |
200
-300
| -60% | -$11.1K |
|
7630
CALL
Kennametal
KMT
$2.65B
| $7.23K | ﹤0.01% |
200
-100
| -33% | -$3.65K |
|
7631
PUT
Douglas Elliman
DOUG
$161M
| $7.22K | ﹤0.01% |
4,400
+2,100
| +91% | +$4.87K |
|
7632
CALL
Orrstown Financial Services
ORRF
$811M
| $7.22K | ﹤0.01% |
+200
| New | +$7.25K |
|
7633
PUT
Andersons Inc
ANDE
$2.73B
| $7.18K | ﹤0.01% |
100
-6,200
| -98% | -$398K |
|
7634
Cognyte Software
CGNT
$609M
| $7.17K | ﹤0.01% |
885
-79,216
| -99% | -$654K |
|
7635
CALL
Hilltop Holdings
HTH
$2.22B
| $7.16K | ﹤0.01% |
+200
| New | +$7.33K |
|
|
SLI
7636
PUT
Standard Lithium
SLI
$556M
| $7.16K | ﹤0.01% |
2,100
-17,400
| -89% | -$77.9K |
|
|
TSLG
7637
Leverage Shares 2X Long TSLA Daily ETF
TSLG
$41.1M
| $7.15K | ﹤0.01% |
1,196
+476
| +66% | +$3.63K |
|
|
FLD
7638
Fold Holdings
FLD
$23.3M
| $7.13K | ﹤0.01% |
5,402
+322
| +6% | +$556 |
|
|
BAND
7639
CALL
Bandwidth Inc
BAND
$2.1B
| $7.13K | ﹤0.01% |
400
-1,100
| -73% | -$16.1K |
|
|
BTCL
7640
PUT
T-Rex 2X Long Bitcoin Daily Target ETF
BTCL
$24.2M
| $7.13K | ﹤0.01% |
1,200
+800
| +200% | +$17K |
|
7641
Lexeo Therapeutics
LXEO
$377M
| $7.12K | ﹤0.01% |
1,240
-11,791
| -90% | -$83.6K |
|
|
SILA
7642
CALL
DELISTED
Sila Realty Trust
SILA
| $7.1K | ﹤0.01% |
+300
| New | +$7.35K |
|
|
INTW
7643
GraniteShares 2x Long INTC Daily ETF
INTW
$374M
| $7.1K | ﹤0.01% |
+1,096
| New | +$8.24K |
|
7644
CALL
CI&T Inc
CINT
$404M
| $7.1K | ﹤0.01% |
1,400
+1,100
| +367% | +$5.42K |
|
7645
PUT
Pulmonx
LUNG
$52M
| $7.09K | ﹤0.01% |
5,500
| – | – |
|
7646
PUT
Evolent Health
EVH
$632M
| $7.07K | ﹤0.01% |
3,100
-19,600
| -86% | -$62.2K |
|
7647
PUT
BRC Inc
BRCC
$149M
| $7.06K | ﹤0.01% |
9,100
+8,400
| +1,200% | +$7.07K |
|
7648
PUT
Sensata Technologies
ST
$6.74B
| $7.04K | ﹤0.01% |
+200
| New | +$7.08K |
|
|
UBEW
7649
Roundhill UBER WeeklyPay ETF
UBEW
$3.65M
| $7.03K | ﹤0.01% |
+231
| New | +$8.07K |
|
|
BWAY
7650
Brainsway
BWAY
$660M
| $7.03K | ﹤0.01% |
+529
| New | +$6.45K |
|
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.