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 | |
|---|---|---|---|---|---|---|
|
FIGR
1526
PUT
Figure Technology Solutions
FIGR
$6.1B
| $2.87M | ﹤0.01% |
84,600
+53,600
| +173% | +$2.31M |
|
1527
Trade Desk
TTD
$8.13B
| $2.87M | ﹤0.01% |
126,533
+106,995
| +548% | +$3.09M |
|
1528
PUT
ZIM Integrated Shipping Services
ZIM
$3B
| $2.87M | ﹤0.01% |
+108,900
| New | +$2.71M |
|
1529
PUT
American Eagle Outfitters
AEO
$2.85B
| $2.86M | ﹤0.01% |
+171,500
| New | +$3.85M |
|
1530
CALL
Diageo
DEO
$46.2B
| $2.86M | ﹤0.01% |
38,400
+23,400
| +156% | +$2.04M |
|
1531
CALL
Huntington Ingalls Industries
HII
$11.3B
| $2.85M | ﹤0.01% |
7,500
+3,500
| +88% | +$1.44M |
|
|
FRMI
1532
CALL
Fermi Inc
FRMI
$4.72B
| $2.84M | ﹤0.01% |
487,000
+240,800
| +98% | +$2.11M |
|
1533
CALL
Carpenter Technology
CRS
$30B
| $2.84M | ﹤0.01% |
7,200
+4,900
| +213% | +$1.78M |
|
1534
PUT
O'Reilly Automotive
ORLY
$72.4B
| $2.83M | ﹤0.01% |
30,700
-100
| -0.3% | -$9.38K |
|
1535
CALL
Sportradar
SRAD
$4.23B
| $2.83M | ﹤0.01% |
169,100
+135,200
| +399% | +$2.51M |
|
1536
PUT
PENN Entertainment
PENN
$2.74B
| $2.83M | ﹤0.01% |
188,300
+23,400
| +14% | +$325K |
|
|
PMT
1537
PUT
PennyMac Mortgage Investment
PMT
$849M
| $2.82M | ﹤0.01% |
242,100
+42,800
| +21% | +$528K |
|
1538
PUT
PBF Energy
PBF
$7.29B
| $2.81M | ﹤0.01% |
59,100
+20,700
| +54% | +$776K |
|
1539
CALL
AngloGold Ashanti
AU
$40.3B
| $2.81M | ﹤0.01% |
28,900
-50,100
| -63% | -$5.14M |
|
1540
PUT
ProShares Ultra S&P500
SSO
$7.82B
| $2.81M | ﹤0.01% |
81,500
+6,200
| +8% | +$354K |
|
1541
PUT
Grab
GRAB
$13.5B
| $2.81M | ﹤0.01% |
767,100
-269,600
| -26% | -$1.14M |
|
1542
Corcept Therapeutics
CORT
$10.2B
| $2.8M | ﹤0.01% |
69,515
-39,822
| -36% | -$1.49M |
|
1543
Peabody Energy
BTU
$2.78B
| $2.8M | ﹤0.01% |
+84,912
| New | +$2.97M |
|
1544
PUT
Universal Technical Institute
UTI
$2.08B
| $2.79M | ﹤0.01% |
+77,400
| New | +$2.44M |
|
1545
CALL
Arthur J. Gallagher & Co
AJG
$63.7B
| $2.79M | ﹤0.01% |
12,900
+2,800
| +28% | +$647K |
|
1546
PUT
Howmet Aerospace
HWM
$116B
| $2.79M | ﹤0.01% |
12,100
+1,900
| +19% | +$443K |
|
1547
Procure Space ETF
UFO
$620M
| $2.79M | ﹤0.01% |
62,221
+32,605
| +110% | +$1.47M |
|
1548
PUT
FirstEnergy
FE
$28.9B
| $2.79M | ﹤0.01% |
55,000
-138,900
| -72% | -$6.74M |
|
1549
CALL
Vanguard Short-Term Treasury ETF
VGSH
$29.3B
| $2.78M | ﹤0.01% |
44,300
+19,300
| +77% | +$1.13M |
|
1550
PUT
Frontline
FRO
$8.75B
| $2.76M | ﹤0.01% |
79,300
+21,700
| +38% | +$663K |
|
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.