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 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.6M |
| 2 |
Shopify
SHOP
|
+$39.6M |
| 3 |
iShares China Large-Cap ETF
FXI
|
+$35.4M |
| 4 |
Verizon
VZ
|
+$34.1M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$34.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
AMC Entertainment Holdings
AMC
|
+$49.5M |
| 2 |
GE Aerospace
GE
|
+$35.2M |
| 3 |
Carnival Corporation Ltd
CCL
|
+$30.5M |
| 4 |
Advanced Micro Devices
AMD
|
+$28.8M |
| 5 |
Micron Technology
MU
|
+$23.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.61% |
| 2 | Consumer Discretionary | 0.43% |
| 3 | Healthcare | 0.35% |
| 4 | Communication Services | 0.23% |
| 5 | Financials | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
876
CALL
Chubb
CB
$137B
| $8.47M | 0.01% |
43,800
+13,600
| +45% | +$2.55M |
|
877
CALL
American Electric Power
AEP
$73.4B
| $8.44M | 0.01% |
94,900
+44,000
| +86% | +$3.71M |
|
878
PUT
Apollo Global Management
APO
$68.6B
| $8.42M | 0.01% |
116,300
+38,800
| +50% | +$2.8M |
|
879
CALL
Lamb Weston
LW
$6.79B
| $8.42M | 0.01% |
132,900
+89,400
| +206% | +$5.16M |
|
880
Peloton Interactive
PTON
$2.61B
| $8.42M | 0.01% |
+235,481
| New | +$14.4M |
|
881
CALL
McCormick & Company Non-Voting
MKC
$13.5B
| $8.41M | 0.01% |
87,100
+58,000
| +199% | +$4.94M |
|
882
PUT
Advance Auto Parts
AAP
$3.22B
| $8.39M | 0.01% |
35,000
+10,500
| +43% | +$2.4M |
|
883
CALL
Humana
HUM
$47.4B
| $8.39M | 0.01% |
18,100
-16,600
| -48% | -$7.35M |
|
884
PUT
Suncor Energy
SU
$78.4B
| $8.38M | 0.01% |
334,600
+84,800
| +34% | +$2.07M |
|
885
Atlassian
TEAM
$20.3B
| $8.37M | 0.01% |
21,953
+1,444
| +7% | +$580K |
|
886
PUT
Antero Resources
AR
$10.9B
| $8.34M | 0.01% |
476,600
+193,200
| +68% | +$3.66M |
|
887
CALL
Invesco Aerospace & Defense ETF
PPA
$8.22B
| $8.33M | 0.01% |
93,600
+53,200
| +132% | +$3.86M |
|
888
BP
BP
$113B
| $8.32M | 0.01% |
312,439
-22,374
| -7% | -$621K |
|
889
PUT
Air Products & Chemicals
APD
$65.5B
| $8.31M | 0.01% |
27,300
+15,400
| +129% | +$4.52M |
|
890
United States Oil Fund
USO
$2.5B
| $8.29M | 0.01% |
152,582
+23,289
| +18% | +$1.27M |
|
891
PUT
Qorvo
QRVO
$7.65B
| $8.27M | 0.01% |
52,900
+25,000
| +90% | +$3.97M |
|
892
CALL
Restaurant Brands International
QSR
$25.1B
| $8.25M | 0.01% |
135,900
+20,500
| +18% | +$1.21M |
|
893
PUT
General Dynamics
GD
$103B
| $8.23M | 0.01% |
39,500
+15,900
| +67% | +$3.21M |
|
894
CALL
United States Natural Gas Fund
UNG
$473M
| $8.23M | 0.01% |
164,775
+53,625
| +48% | +$3.49M |
|
895
PUT
TJX Companies
TJX
$170B
| $8.21M | 0.01% |
108,100
-107,500
| -50% | -$7.46M |
|
896
CALL
Constellation Brands
STZ
$22.1B
| $8.18M | 0.01% |
32,600
-74,500
| -70% | -$17M |
|
897
CALL
Wheaton Precious Metals
WPM
$50B
| $8.17M | 0.01% |
190,300
+106,800
| +128% | +$4.4M |
|
898
CALL
DigitalOcean
DOCN
$15.3B
| $8.16M | 0.01% |
101,600
+99,600
| +4,980% | +$9.32M |
|
899
CALL
Stellantis
STLA
$16.7B
| $8.16M | 0.01% |
434,800
+89,300
| +26% | +$1.72M |
|
900
PUT
XP
XP
$8.7B
| $8.16M | 0.01% |
283,800
+265,200
| +1,426% | +$8.64M |
|
Similar funds
Simplex Trading's Q4 2021 Portfolio in Review
As of Q4 2021, Simplex Trading held 12,077 positions worth $99B, down 7.5% from $107B the previous quarter. Its ten largest holdings account for 33% of the portfolio.
Simplex Trading withdrew a net $10.8B in Q4 2021, closing 1,645 positions and reducing 4,258 holdings. Its most notable exit was Carnival Corporation Ltd, an estimated $30.5M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.61% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in iShares China Large-Cap ETF worth $33M.
- Simplex Trading's largest Q4 2021 buy was iShares China Large-Cap ETF: 902,666 shares worth $33M.
- Simplex Trading added most to State Street Financial Select Sector SPDR ETF in Q4 2021, an estimated $42.6M increase.
- Simplex Trading's biggest Q4 2021 reduction was AMC Entertainment Holdings, cutting an estimated $49.5M.
- Simplex Trading fully exited Carnival Corporation Ltd in Q4 2021, selling an estimated $30.5M.
- Simplex Trading's ten largest holdings make up 33% of its $99B portfolio in Q4 2021.
- Simplex Trading opened 2,269 new positions and closed 1,645 in Q4 2021.
- Simplex Trading's portfolio value fell 7.5% quarter-over-quarter to $99B.
Based on Simplex Trading's 13F filing for Q4 2021, filed 4 Feb 2022.