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 | |
|---|---|---|---|---|---|---|
|
GGPI
726
CALL
DELISTED
Gores Guggenheim, Inc. Class A Common Stock
GGPI
| $11.4M | 0.01% |
+970,200
| New | +$11.2M |
|
727
CALL
Digital Turbine
APPS
$971M
| $11.3M | 0.01% |
186,100
+52,900
| +40% | +$3.6M |
|
728
ProShares UltraPro S&P 500
UPRO
$5.09B
| $11.3M | 0.01% |
148,702
+133,724
| +893% | +$9.26M |
|
729
CALL
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$107M
| $11.3M | 0.01% |
287,900
-45,425
| -14% | -$1.23M |
|
730
CALL
Goodyear
GT
$2.02B
| $11.3M | 0.01% |
528,200
+408,600
| +342% | +$8.48M |
|
|
PPLC
731
CALL
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $11.2M | 0.01% |
265,500
+153,300
| +137% | +$6.48M |
|
732
CALL
Halliburton
HAL
$27.3B
| $11.2M | 0.01% |
490,200
+261,400
| +114% | +$6.19M |
|
733
PUT
Boston Scientific
BSX
$64.8B
| $11.2M | 0.01% |
263,000
-122,700
| -32% | -$5.16M |
|
734
Cleveland-Cliffs
CLF
$6.24B
| $11.1M | 0.01% |
509,756
+103,660
| +26% | +$2.23M |
|
|
GAP
735
PUT
The Gap Inc
GAP
$6.79B
| $11.1M | 0.01% |
626,700
+108,300
| +21% | +$2.27M |
|
736
CALL
ChargePoint
CHPT
$140M
| $11M | 0.01% |
28,955
+19,935
| +221% | +$8.83M |
|
737
CALL
Philip Morris
PM
$298B
| $11M | 0.01% |
115,800
-35,700
| -24% | -$3.34M |
|
738
PUT
Synchrony
SYF
$23.3B
| $11M | 0.01% |
237,000
+122,600
| +107% | +$5.9M |
|
739
CALL
Intercontinental Exchange
ICE
$81B
| $11M | 0.01% |
80,100
-41,300
| -34% | -$5.47M |
|
740
PUT
SLB Ltd
SLB
$70.6B
| $10.9M | 0.01% |
363,900
-260,700
| -42% | -$8.21M |
|
741
PUT
CF Industries
CF
$19.5B
| $10.9M | 0.01% |
153,400
+17,500
| +13% | +$1.1M |
|
|
PARA
742
PUT
DELISTED
Paramount Global Class B
PARA
| $10.8M | 0.01% |
1,821,400
-249,500
| -12% | -$8.6M |
|
743
CALL
Antero Resources
AR
$10.9B
| $10.8M | 0.01% |
617,000
+69,800
| +13% | +$1.32M |
|
744
PUT
Colgate-Palmolive
CL
$72.1B
| $10.8M | 0.01% |
126,200
+62,200
| +97% | +$4.86M |
|
745
PUT
Aptiv
APTV
$11.9B
| $10.7M | 0.01% |
65,100
+23,100
| +55% | +$3.85M |
|
746
CALL
APA Corp
APA
$12.9B
| $10.7M | 0.01% |
399,100
-103,800
| -21% | -$2.76M |
|
747
CALL
Trump Media & Technology Group
DJT
$2.46B
| $10.7M | 0.01% |
+208,200
| New | +$9.42M |
|
748
PUT
Zoetis
ZTS
$31.3B
| $10.7M | 0.01% |
43,700
+15,000
| +52% | +$3.29M |
|
|
749
CALL
Colgate-Palmolive
CL
$72.1B
| $10.6M | 0.01% |
124,400
-48,000
| -28% | -$3.75M |
|
750
CALL
Ferrari
RACE
$63.2B
| $10.6M | 0.01% |
41,000
+24,400
| +147% | +$6.01M |
|
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.