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 | |
|---|---|---|---|---|---|---|
1176
CALL
Stanley Black & Decker
SWK
$14.2B
| $5.24M | 0.01% |
27,800
-6,800
| -20% | -$1.26M |
|
1177
CALL
Williams-Sonoma
WSM
$26.7B
| $5.23M | 0.01% |
61,800
+31,800
| +106% | +$2.96M |
|
1178
PUT
Energy Transfer Partners
ET
$70.1B
| $5.21M | 0.01% |
633,700
+63,400
| +11% | +$576K |
|
1179
Humana
HUM
$46.7B
| $5.19M | 0.01% |
+11,192
| New | +$4.95M |
|
1180
PUT
American Electric Power
AEP
$73.7B
| $5.19M | 0.01% |
58,300
+44,700
| +329% | +$3.77M |
|
|
LAZR
1181
CALL
DELISTED
Luminar Technologies
LAZR
| $5.18M | 0.01% |
20,440
-5,593
| -21% | -$1.4M |
|
1182
PUT
Carrier Global
CARR
$57.2B
| $5.16M | 0.01% |
95,100
+60,000
| +171% | +$3.24M |
|
1183
PUT
O'Reilly Automotive
ORLY
$72.4B
| $5.16M | 0.01% |
109,500
-228,000
| -68% | -$9.87M |
|
1184
CALL
Royal Gold
RGLD
$17.1B
| $5.16M | 0.01% |
49,000
+7,800
| +19% | +$786K |
|
1185
PUT
Pool Corp
POOL
$6.7B
| $5.15M | 0.01% |
9,100
-1,600
| -15% | -$839K |
|
1186
PUT
Wendy's
WEN
$1.33B
| $5.15M | 0.01% |
215,800
+114,300
| +113% | +$2.54M |
|
|
SNCY
1187
CALL
DELISTED
Sun Country Airlines
SNCY
| $5.14M | 0.01% |
+188,700
| New | +$5.63M |
|
1188
PUT
Cognizant
CTSH
$21.5B
| $5.14M | 0.01% |
57,900
+20,900
| +56% | +$1.68M |
|
1189
PUT
PTC
PTC
$13.7B
| $5.12M | 0.01% |
42,300
+41,200
| +3,745% | +$4.97M |
|
1190
Best Buy
BBY
$18B
| $5.12M | 0.01% |
+50,348
| New | +$5.73M |
|
1191
ConocoPhillips
COP
$147B
| $5.11M | 0.01% |
70,827
-42,337
| -37% | -$3.08M |
|
1192
CALL
Arrowhead Research
ARWR
$12.1B
| $5.11M | 0.01% |
77,000
+29,900
| +63% | +$2.05M |
|
1193
CALL
XP
XP
$8.62B
| $5.1M | 0.01% |
177,600
+118,700
| +202% | +$3.87M |
|
|
1194
CALL
Wendy's
WEN
$1.33B
| $5.06M | 0.01% |
212,000
-149,600
| -41% | -$3.33M |
|
1195
PUT
JetBlue
JBLU
$1.96B
| $5.04M | 0.01% |
354,100
+86,900
| +33% | +$1.28M |
|
|
SI
1196
CALL
DELISTED
Silvergate Capital Corporation
SI
| $5.04M | 0.01% |
34,000
-9,000
| -21% | -$1.54M |
|
|
SI
1197
PUT
DELISTED
Silvergate Capital Corporation
SI
| $5.04M | 0.01% |
34,000
+6,400
| +23% | +$1.09M |
|
1198
CALL
HP
HPQ
$23.5B
| $5.03M | 0.01% |
133,600
+34,000
| +34% | +$1.11M |
|
1199
PUT
Equity Residential
EQR
$25.4B
| $5.02M | 0.01% |
55,500
-20,600
| -27% | -$1.77M |
|
1200
PUT
Jacobs Solutions
J
$15.9B
| $5.01M | 0.01% |
43,523
+40,984
| +1,614% | +$4.74M |
|
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.