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 | |
|---|---|---|---|---|---|---|
|
CYBR
2176
CALL
DELISTED
CyberArk
CYBR
| $1.75M | ﹤0.01% |
10,100
-6,900
| -41% | -$1.21M |
|
|
TELL
2177
PUT
DELISTED
Tellurian Inc.
TELL
| $1.75M | ﹤0.01% |
567,700
+43,100
| +8% | +$153K |
|
2178
PUT
Arthur J. Gallagher & Co
AJG
$63.7B
| $1.75M | ﹤0.01% |
10,300
+3,400
| +49% | +$556K |
|
2179
PUT
Campbell Soup
CPB
$6.51B
| $1.75M | ﹤0.01% |
40,200
-60,500
| -60% | -$2.52M |
|
2180
CALL
Vir Biotechnology
VIR
$1.47B
| $1.75M | ﹤0.01% |
41,700
+37,976
| +1,020% | +$1.49M |
|
|
PPL
2181
CALL
PPL Corp
PPL
$27.3B
| $1.74M | ﹤0.01% |
58,000
-15,800
| -21% | -$456K |
|
2182
Abbott
ABT
$180B
| $1.74M | ﹤0.01% |
+12,379
| New | +$1.58M |
|
|
IRBT
2183
DELISTED
iRobot
IRBT
| $1.74M | ﹤0.01% |
+26,427
| New | +$2.09M |
|
2184
CALL
Plains All American Pipeline
PAA
$17.4B
| $1.74M | ﹤0.01% |
186,500
-161,500
| -46% | -$1.62M |
|
2185
CALL
Tractor Supply
TSCO
$16.3B
| $1.74M | ﹤0.01% |
36,500
-26,500
| -42% | -$1.16M |
|
2186
VICI Properties
VICI
$29.4B
| $1.74M | ﹤0.01% |
+57,776
| New | +$1.67M |
|
2187
CALL
Matador Resources
MTDR
$6.31B
| $1.73M | ﹤0.01% |
46,900
+9,600
| +26% | +$393K |
|
|
PBT
2188
PUT
Permian Basin Royalty Trust
PBT
$1.36B
| $1.73M | ﹤0.01% |
171,400
+170,900
| +34,180% | +$1.41M |
|
2189
PUT
KeyCorp
KEY
$24.3B
| $1.73M | ﹤0.01% |
74,800
-11,600
| -13% | -$269K |
|
2190
Pinnacle West Capital
PNW
$12.9B
| $1.73M | ﹤0.01% |
+24,501
| New | +$1.65M |
|
2191
PUT
Exelon
EXC
$48.6B
| $1.73M | ﹤0.01% |
41,920
+2,243
| +6% | +$84.5K |
|
2192
CALL
CS Disco
LAW
$226M
| $1.72M | ﹤0.01% |
+48,200
| New | +$2.14M |
|
2193
PUT
Tanger
SKT
$4.82B
| $1.72M | ﹤0.01% |
89,400
-12,000
| -12% | -$228K |
|
|
OSH
2194
PUT
DELISTED
Oak Street Health, Inc.
OSH
| $1.72M | ﹤0.01% |
52,000
+34,400
| +195% | +$1.3M |
|
2195
PUT
AGNC Investment
AGNC
$12.3B
| $1.72M | ﹤0.01% |
114,300
-135,700
| -54% | -$2.15M |
|
|
2196
PUT
Tractor Supply
TSCO
$16.3B
| $1.72M | ﹤0.01% |
36,000
-142,500
| -80% | -$6.24M |
|
2197
CALL
Evergy
EVRG
$20.1B
| $1.72M | ﹤0.01% |
25,000
+11,000
| +79% | +$715K |
|
2198
Murphy USA
MUSA
$11.3B
| $1.71M | ﹤0.01% |
8,599
+7,294
| +559% | +$1.3M |
|
|
CS
2199
PUT
DELISTED
Credit Suisse Group
CS
| $1.71M | ﹤0.01% |
177,500
-138,200
| -44% | -$1.38M |
|
|
RFP
2200
PUT
DELISTED
Resolute Forest Products Inc.
RFP
| $1.71M | ﹤0.01% |
112,100
-17,900
| -14% | -$226K |
|
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.