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 | |
|---|---|---|---|---|---|---|
2126
CALL
Gen Digital
GEN
$15.6B
| $1.84M | ﹤0.01% |
71,000
+44,800
| +171% | +$1.13M |
|
|
BZUN
2127
PUT
Baozun
BZUN
$144M
| $1.84M | ﹤0.01% |
132,600
+100,100
| +308% | +$1.64M |
|
2128
PUT
Zevra Therapeutics
ZVRA
$563M
| $1.84M | ﹤0.01% |
211,500
+199,100
| +1,606% | +$1.78M |
|
2129
First Majestic Silver
AG
$8.05B
| $1.84M | ﹤0.01% |
165,752
+164,537
| +13,542% | +$1.99M |
|
2130
Invesco CurrencyShares Japanese Yen Trust
FXY
$423M
| $1.84M | ﹤0.01% |
+22,603
| New | +$1.87M |
|
2131
PUT
Royalty Pharma
RPRX
$26.1B
| $1.84M | ﹤0.01% |
46,200
+31,600
| +216% | +$1.23M |
|
2132
Boot Barn
BOOT
$4.55B
| $1.84M | ﹤0.01% |
+14,933
| New | +$1.69M |
|
|
EMBJ
2133
Embraer S.A. ADS
EMBJ
$11.6B
| $1.84M | ﹤0.01% |
103,540
+83,842
| +426% | +$1.36M |
|
2134
CALL
Jacobs Solutions
J
$15.9B
| $1.84M | ﹤0.01% |
15,958
+12,815
| +408% | +$1.48M |
|
|
ATCO
2135
CALL
DELISTED
Atlas Corp.
ATCO
| $1.84M | ﹤0.01% |
129,600
-139,600
| -52% | -$1.97M |
|
2136
CALL
O'Reilly Automotive
ORLY
$72.4B
| $1.84M | ﹤0.01% |
39,000
-115,500
| -75% | -$5M |
|
2137
Kinross Gold
KGC
$28.5B
| $1.83M | ﹤0.01% |
314,913
+99,977
| +47% | +$598K |
|
|
VRE
2138
CALL
DELISTED
Veris Residential
VRE
| $1.83M | ﹤0.01% |
99,500
-10,700
| -10% | -$196K |
|
2139
CALL
monday.com
MNDY
$3.27B
| $1.82M | ﹤0.01% |
5,900
+4,900
| +490% | +$1.67M |
|
|
ISEE
2140
DELISTED
IVERIC bio, Inc. Common Stock
ISEE
| $1.82M | ﹤0.01% |
108,753
+97,230
| +844% | +$1.59M |
|
2141
CALL
ICICI Bank
IBN
$106B
| $1.82M | ﹤0.01% |
91,800
-3,600
| -4% | -$71.1K |
|
|
PINC
2142
PUT
DELISTED
Premier
PINC
| $1.81M | ﹤0.01% |
44,100
-6,300
| -13% | -$249K |
|
2143
CALL
SiriusXM
SIRI
$10B
| $1.81M | ﹤0.01% |
28,580
-5,220
| -15% | -$327K |
|
2144
Corning
GLW
$126B
| $1.8M | ﹤0.01% |
48,444
+44,492
| +1,126% | +$1.67M |
|
2145
CALL
Ocugen
OCGN
$410M
| $1.8M | ﹤0.01% |
396,200
-317,400
| -44% | -$2.4M |
|
2146
CALL
Kulicke & Soffa
KLIC
$5.3B
| $1.8M | ﹤0.01% |
29,700
+3,300
| +13% | +$189K |
|
|
HBP
2147
PUT
DELISTED
Huttig Building Products, Inc.
HBP
| $1.8M | ﹤0.01% |
162,400
+154,800
| +2,037% | +$1.26M |
|
2148
PUT
Clover Health Investments
CLOV
$2.28B
| $1.8M | ﹤0.01% |
482,800
-468,900
| -49% | -$2.88M |
|
2149
CALL
Compass
COMP
$8.27B
| $1.8M | ﹤0.01% |
197,600
+186,000
| +1,603% | +$2.04M |
|
2150
CALL
CNX Resources
CNX
$4.85B
| $1.79M | ﹤0.01% |
130,500
+9,000
| +7% | +$127K |
|
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.