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 | |
|---|---|---|---|---|---|---|
901
CALL
Agilent Technologies
A
$39.5B
| $8.14M | 0.01% |
51,000
+23,500
| +85% | +$3.66M |
|
902
Broadcom
AVGO
$1.87T
| $8.14M | 0.01% |
122,310
+34,070
| +39% | +$1.92M |
|
903
CALL
Corsair Gaming
CRSR
$1.08B
| $8.13M | 0.01% |
387,200
+215,500
| +126% | +$5.15M |
|
|
CPE
904
PUT
DELISTED
Callon Petroleum Company
CPE
| $8.1M | 0.01% |
177,700
+41,200
| +30% | +$2.2M |
|
905
CALL
PagSeguro Digital
PAGS
$2.64B
| $8.1M | 0.01% |
308,800
+84,400
| +38% | +$2.75M |
|
906
CALL
InMode
INMD
$867M
| $8.07M | 0.01% |
114,400
-15,800
| -12% | -$1.27M |
|
907
PUT
Cintas
CTAS
$81.3B
| $8.06M | 0.01% |
72,800
+65,200
| +858% | +$7.02M |
|
908
PUT
Cheniere Energy
LNG
$57B
| $8.06M | 0.01% |
79,500
+33,800
| +74% | +$3.53M |
|
909
CALL
Weyerhaeuser
WY
$17B
| $8.03M | 0.01% |
195,000
-24,700
| -11% | -$938K |
|
910
CALL
Veeva Systems
VEEV
$29.2B
| $8.02M | 0.01% |
31,400
-32,000
| -50% | -$9.3M |
|
911
CALL
Illinois Tool Works
ITW
$79.7B
| $8.02M | 0.01% |
32,500
+21,100
| +185% | +$4.9M |
|
912
CALL
Hyatt Hotels
H
$17.3B
| $8M | 0.01% |
83,400
+61,300
| +277% | +$5.23M |
|
913
CALL
Monolithic Power Systems
MPWR
$68.6B
| $7.99M | 0.01% |
16,200
+12,700
| +363% | +$6.55M |
|
914
CALL
Cracker Barrel
CBRL
$1.16B
| $7.99M | 0.01% |
62,100
-3,000
| -5% | -$400K |
|
|
GTM
915
PUT
ZoomInfo Technologies
GTM
$849M
| $7.98M | 0.01% |
124,300
-8,600
| -6% | -$576K |
|
916
Okta
OKTA
$23.7B
| $7.98M | 0.01% |
35,588
+10,151
| +40% | +$2.42M |
|
917
PUT
EPAM Systems
EPAM
$4.5B
| $7.95M | 0.01% |
11,900
+4,200
| +55% | +$2.7M |
|
|
HUT
918
CALL
Hut 8
HUT
$13.2B
| $7.94M | 0.01% |
202,320
+201,980
| +59,406% | +$11.4M |
|
919
CALL
Aptiv
APTV
$11.9B
| $7.93M | 0.01% |
48,100
+32,900
| +216% | +$5.49M |
|
920
CALL
StoneCo
STNE
$2.67B
| $7.93M | 0.01% |
470,200
+356,300
| +313% | +$9.03M |
|
921
CALL
HCA Healthcare
HCA
$83.5B
| $7.91M | 0.01% |
30,800
+10,100
| +49% | +$2.47M |
|
922
CALL
HubSpot
HUBS
$9.73B
| $7.91M | 0.01% |
12,000
+7,500
| +167% | +$5.67M |
|
|
FTCH
923
CALL
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $7.9M | 0.01% |
236,300
+128,000
| +118% | +$4.7M |
|
|
GRMN
924
PUT
Garmin
GRMN
$46.3B
| $7.88M | 0.01% |
57,900
+48,600
| +523% | +$7.02M |
|
925
CALL
Molson Coors Class B
TAP
$7.51B
| $7.87M | 0.01% |
169,700
+30,000
| +21% | +$1.38M |
|
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.