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 | |
|---|---|---|---|---|---|---|
1226
CALL
GoDaddy
GDDY
$12.3B
| $4.84M | ﹤0.01% |
57,100
+23,800
| +71% | +$1.7M |
|
1227
CALL
SentinelOne
S
$6.22B
| $4.84M | ﹤0.01% |
+95,800
| New | +$5.61M |
|
1228
PUT
United States Natural Gas Fund
UNG
$470M
| $4.83M | ﹤0.01% |
96,750
-43,475
| -31% | -$2.83M |
|
1229
PUT
First Majestic Silver
AG
$8.05B
| $4.83M | ﹤0.01% |
434,700
+206,200
| +90% | +$2.49M |
|
|
HAAC
1230
CALL
DELISTED
Health Assurance Acquisition Corp. Class A Common Stock
HAAC
| $4.82M | ﹤0.01% |
492,900
+255,000
| +107% | +$2.5M |
|
1231
PUT
Paychex
PAYX
$40.4B
| $4.8M | ﹤0.01% |
35,200
+18,600
| +112% | +$2.3M |
|
1232
CALL
Shift4
FOUR
$3.84B
| $4.8M | ﹤0.01% |
82,900
+72,900
| +729% | +$4.63M |
|
1233
CALL
Range Resources
RRC
$9.11B
| $4.8M | ﹤0.01% |
269,100
+162,500
| +152% | +$3.5M |
|
|
FITB
1234
PUT
Fifth Third Bancorp
FITB
$52B
| $4.79M | ﹤0.01% |
110,000
+56,000
| +104% | +$2.45M |
|
1235
CALL
Generac Holdings
GNRC
$11.9B
| $4.79M | ﹤0.01% |
13,600
-19,100
| -58% | -$7.92M |
|
|
BBBY
1236
PUT
Bed Bath & Beyond
BBBY
$473M
| $4.79M | ﹤0.01% |
89,210
+46,420
| +108% | +$3.51M |
|
1237
CALL
Qorvo
QRVO
$7.63B
| $4.79M | ﹤0.01% |
30,600
+6,100
| +25% | +$970K |
|
1238
CALL
MetLife
MET
$61B
| $4.78M | ﹤0.01% |
76,500
-83,300
| -52% | -$5.23M |
|
1239
Invesco QQQ Trust
QQQ
$455B
| $4.78M | ﹤0.01% |
+12,012
| New | +$4.64M |
|
|
GAP
1240
The Gap Inc
GAP
$6.84B
| $4.78M | ﹤0.01% |
270,751
+107,787
| +66% | +$2.26M |
|
1241
PUT
Regions Financial
RF
$26.3B
| $4.77M | ﹤0.01% |
218,800
+148,700
| +212% | +$3.4M |
|
1242
Rocket Companies
RKT
$36.9B
| $4.76M | ﹤0.01% |
340,262
-291,384
| -46% | -$4.64M |
|
1243
PUT
BioMarin Pharmaceuticals
BMRN
$11.5B
| $4.76M | ﹤0.01% |
53,900
-40,600
| -43% | -$3.35M |
|
1244
PUT
ALPS REIT Dividend Dogs ETF
RDOG
$11.6M
| $4.75M | ﹤0.01% |
157,200
+51,900
| +49% | +$2.65M |
|
1245
Workday
WDAY
$33.4B
| $4.75M | ﹤0.01% |
17,370
-15,375
| -47% | -$4.27M |
|
|
COOP
1246
PUT
DELISTED
Mr. Cooper
COOP
| $4.74M | ﹤0.01% |
114,000
+78,300
| +219% | +$3.3M |
|
1247
PUT
Tenet Healthcare
THC
$20.1B
| $4.74M | ﹤0.01% |
58,000
+36,100
| +165% | +$2.64M |
|
1248
PUT
Stellantis
STLA
$16.5B
| $4.74M | ﹤0.01% |
252,400
+43,300
| +21% | +$835K |
|
|
GOOS
1249
PUT
Canada Goose Holdings
GOOS
$868M
| $4.73M | ﹤0.01% |
127,600
+10,000
| +9% | +$409K |
|
1250
ArcelorMittal
MT
$50.4B
| $4.73M | ﹤0.01% |
148,529
+85,134
| +134% | +$2.64M |
|
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.