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 | |
|---|---|---|---|---|---|---|
|
WE
1751
PUT
DELISTED
WeWork Inc.
WE
| $2.65M | ﹤0.01% |
+7,705
| New | +$2.82M |
|
1752
CALL
Organon & Co
OGN
$3.55B
| $2.65M | ﹤0.01% |
87,000
+65,600
| +307% | +$2.14M |
|
|
SGEN
1753
CALL
DELISTED
Seagen Inc. Common Stock
SGEN
| $2.64M | ﹤0.01% |
17,100
-3,400
| -17% | -$569K |
|
1754
PUT
Lincoln National
LNC
$7.91B
| $2.64M | ﹤0.01% |
38,700
-19,400
| -33% | -$1.37M |
|
1755
CALL
Alcon
ALC
$33.1B
| $2.64M | ﹤0.01% |
30,300
-16,400
| -35% | -$1.35M |
|
1756
Pan American Silver
PAAS
$18.6B
| $2.64M | ﹤0.01% |
105,700
+77,693
| +277% | +$1.96M |
|
1757
Radware
RDWR
$1.24B
| $2.64M | ﹤0.01% |
63,369
-167,990
| -73% | -$5.71M |
|
1758
CALL
Eastman Chemical
EMN
$7.8B
| $2.63M | ﹤0.01% |
21,800
+18,000
| +474% | +$2M |
|
|
NOVA
1759
PUT
DELISTED
Sunnova Energy
NOVA
| $2.63M | ﹤0.01% |
94,200
+51,800
| +122% | +$1.87M |
|
1760
CALL
Texas Roadhouse
TXRH
$12.7B
| $2.62M | ﹤0.01% |
29,400
+12,900
| +78% | +$1.15M |
|
1761
PUT
FTAI Aviation
FTAI
$22.2B
| $2.62M | ﹤0.01% |
106,210
+93,563
| +740% | +$2.05M |
|
1762
Direxion Daily S&P Biotech Bull 3X ETF
LABU
$571M
| $2.62M | ﹤0.01% |
3,640
+3,183
| +696% | +$3.05M |
|
|
HYZN
1763
CALL
DELISTED
Hyzon Motors Inc. Class A Common Stock
HYZN
| $2.62M | ﹤0.01% |
+8,076
| New | +$2.63M |
|
1764
PUT
Viasat
VSAT
$9.79B
| $2.62M | ﹤0.01% |
58,800
-53,000
| -47% | -$2.74M |
|
1765
CALL
First Horizon
FHN
$12.1B
| $2.62M | ﹤0.01% |
160,200
+47,800
| +43% | +$797K |
|
1766
CALL
Caleres
CAL
$396M
| $2.61M | ﹤0.01% |
115,000
+91,100
| +381% | +$2.17M |
|
1767
Direxion Daily S&P Oil & Gas Exp. & Prod. Bull 2X ETF
GUSH
$247M
| $2.61M | ﹤0.01% |
118,896
+20,260
| +21% | +$516K |
|
1768
CALL
iShares Gold Trust
IAU
$63B
| $2.61M | ﹤0.01% |
74,900
+900
| +1% | +$30.8K |
|
|
NTR
1769
PUT
DELISTED
NEW YORK MORTGAGE TRUST INC
NTR
| $2.61M | ﹤0.01% |
701,000
+217,900
| +45% | +$810K |
|
1770
CALL
Workhorse Group
WKHS
$29.5M
| $2.6M | ﹤0.01% |
199
-277
| -58% | -$5.04M |
|
|
CTRA
1771
DELISTED
Coterra Energy
CTRA
| $2.6M | ﹤0.01% |
136,792
+15,887
| +13% | +$331K |
|
1772
PUT
Chemours
CC
$2.59B
| $2.6M | ﹤0.01% |
77,400
-19,500
| -20% | -$607K |
|
1773
CALL
Olin
OLN
$2.64B
| $2.59M | ﹤0.01% |
45,100
+20,900
| +86% | +$1.17M |
|
1774
PUT
Dutch Bros
BROS
$8.78B
| $2.59M | ﹤0.01% |
+50,800
| New | +$2.82M |
|
1775
Prologis
PLD
$138B
| $2.58M | ﹤0.01% |
+15,339
| New | +$2.29M |
|
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.