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 | |
|---|---|---|---|---|---|---|
1651
CALL
Invesco DB Commodity Index Tracking Fund
DBC
$1.73B
| $2.95M | ﹤0.01% |
141,800
-29,000
| -17% | -$605K |
|
1652
iShares Russell 2000 ETF
IWM
$80.9B
| $2.94M | ﹤0.01% |
+13,233
| New | +$2.99M |
|
1653
PUT
PVH
PVH
$3.71B
| $2.94M | ﹤0.01% |
27,600
-27,300
| -50% | -$2.98M |
|
1654
PUT
Bakkt Inc
BKKT
$333M
| $2.94M | ﹤0.01% |
13,832
+13,240
| +2,236% | +$5.47M |
|
1655
Direxion Daily Financial Bull 3x ETF
FAS
$2.4B
| $2.94M | ﹤0.01% |
22,493
-32,186
| -59% | -$4.31M |
|
1656
PUT
MP Materials
MP
$7.35B
| $2.93M | ﹤0.01% |
64,600
+20,200
| +45% | +$796K |
|
|
1657
CALL
PVH
PVH
$3.71B
| $2.93M | ﹤0.01% |
27,500
+300
| +1% | +$32.8K |
|
1658
CALL
Packaging Corp of America
PKG
$22.7B
| $2.93M | ﹤0.01% |
21,500
+10,300
| +92% | +$1.39M |
|
1659
PUT
Ameriprise Financial
AMP
$46.8B
| $2.93M | ﹤0.01% |
9,700
+900
| +10% | +$266K |
|
1660
PUT
Williams-Sonoma
WSM
$26.7B
| $2.92M | ﹤0.01% |
34,600
-11,800
| -25% | -$1.1M |
|
|
LAC
1661
PUT
DELISTED
Lithium Americas Corp. Common Shares
LAC
| $2.92M | ﹤0.01% |
100,400
+9,700
| +11% | +$290K |
|
1662
Fiverr
FVRR
$376M
| $2.92M | ﹤0.01% |
25,707
+1,871
| +8% | +$292K |
|
1663
CALL
New Oriental
EDU
$7.84B
| $2.92M | ﹤0.01% |
139,060
+80,050
| +136% | +$1.73M |
|
|
BRSL
1664
PUT
Brightstar Lottery PLC
BRSL
$1.91B
| $2.92M | ﹤0.01% |
100,900
+64,700
| +179% | +$1.83M |
|
1665
CALL
Fluor
FLR
$7.29B
| $2.92M | ﹤0.01% |
117,700
+27,100
| +30% | +$577K |
|
1666
PUT
AMN Healthcare
AMN
$1.28B
| $2.91M | ﹤0.01% |
23,800
+21,600
| +982% | +$2.4M |
|
1667
PUT
Crown Holdings
CCK
$12.8B
| $2.91M | ﹤0.01% |
26,300
+15,200
| +137% | +$1.62M |
|
1668
PUT
Alaska Air
ALK
$5.15B
| $2.91M | ﹤0.01% |
55,800
-400
| -0.7% | -$21.7K |
|
1669
Marqeta
MQ
$1.8B
| $2.9M | ﹤0.01% |
42,303
+37,563
| +792% | +$3.36M |
|
|
CFLT
1670
CALL
DELISTED
Confluent
CFLT
| $2.9M | ﹤0.01% |
+38,100
| New | +$2.75M |
|
|
CANO
1671
CALL
DELISTED
Cano Health, Inc.
CANO
| $2.9M | ﹤0.01% |
3,259
+2,730
| +516% | +$2.87M |
|
1672
CALL
Aehr Test Systems
AEHR
$2.48B
| $2.9M | ﹤0.01% |
+120,000
| New | +$2.34M |
|
1673
CALL
DigitalBridge
DBRG
$2.94B
| $2.9M | ﹤0.01% |
87,025
-70,400
| -45% | -$2.09M |
|
1674
CALL
Tanger
SKT
$4.82B
| $2.9M | ﹤0.01% |
150,400
-44,300
| -23% | -$843K |
|
1675
PUT
Corteva
CTVA
$59.7B
| $2.89M | ﹤0.01% |
61,200
-109,800
| -64% | -$5M |
|
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.