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 | |
|---|---|---|---|---|---|---|
3001
Edwards Lifesciences
EW
$47.8B
| $903K | ﹤0.01% |
6,972
-24,620
| -78% | -$2.87M |
|
|
WBX
3002
CALL
Wallbox
WBX
$90.2M
| $903K | ﹤0.01% |
+2,765
| New | +$759K |
|
3003
ARK Web x.0 ETF
ARKW
$1.65B
| $902K | ﹤0.01% |
7,611
-799
| -10% | -$113K |
|
|
FIRY
3004
PUT
Firy Inc
FIRY
$130M
| $902K | ﹤0.01% |
6,065
-9,340
| -61% | -$1.8M |
|
3005
CALL
Petco
WOOF
$777M
| $902K | ﹤0.01% |
45,600
-91,200
| -67% | -$1.99M |
|
|
SWN
3006
DELISTED
Southwestern Energy Company
SWN
| $901K | ﹤0.01% |
193,493
+62,280
| +47% | +$310K |
|
|
TRHC
3007
PUT
DELISTED
Tabula Rasa HealthCare, Inc. Common Stock
TRHC
| $900K | ﹤0.01% |
60,000
+42,100
| +235% | +$767K |
|
3008
CALL
Sotera Health
SHC
$4.92B
| $899K | ﹤0.01% |
38,200
+38,100
| +38,100% | +$912K |
|
3009
Baker Hughes
BKR
$60.1B
| $898K | ﹤0.01% |
37,327
-43,477
| -54% | -$1.07M |
|
3010
CALL
Krispy Kreme
DNUT
$562M
| $898K | ﹤0.01% |
+47,500
| New | +$698K |
|
3011
Suburban Propane Partners
SPH
$1.21B
| $898K | ﹤0.01% |
61,311
+57,771
| +1,632% | +$874K |
|
3012
PUT
Stem
STEM
$50M
| $897K | ﹤0.01% |
2,365
-11,035
| -82% | -$4.78M |
|
3013
CALL
Columbia Sportswear
COLM
$3.25B
| $896K | ﹤0.01% |
9,200
+5,500
| +149% | +$547K |
|
3014
American Express Global Business Travel
GBTG
$4.91B
| $896K | ﹤0.01% |
+90,829
| New | +$894K |
|
3015
PUT
ACI Worldwide
ACIW
$5.88B
| $895K | ﹤0.01% |
25,800
+22,900
| +790% | +$735K |
|
|
PR
3016
Permian Resources
PR
$17B
| $895K | ﹤0.01% |
149,691
+36,397
| +32% | +$248K |
|
3017
Sibanye-Stillwater
SBSW
$6.05B
| $895K | ﹤0.01% |
71,373
-11,462
| -14% | -$154K |
|
3018
CALL
Viper Energy
VNOM
$8.4B
| $895K | ﹤0.01% |
42,000
+31,500
| +300% | +$705K |
|
|
TTCF
3019
PUT
DELISTED
Tattooed Chef, Inc Class A Common Stock
TTCF
| $893K | ﹤0.01% |
57,500
+10,500
| +22% | +$180K |
|
|
ME
3020
PUT
DELISTED
23andMe Holding Co
ME
| $891K | ﹤0.01% |
6,690
+3,515
| +111% | +$649K |
|
3021
CALL
Houlihan Lokey
HLI
$9.75B
| $890K | ﹤0.01% |
+8,600
| New | +$918K |
|
|
VNE
3022
PUT
DELISTED
Veoneer, Inc.
VNE
| $890K | ﹤0.01% |
25,100
+24,400
| +3,486% | +$863K |
|
3023
CALL
MaxLinear
MXL
$5.88B
| $889K | ﹤0.01% |
11,800
+1,800
| +18% | +$115K |
|
|
VYGG
3024
CALL
DELISTED
Vy Global Growth
VYGG
| $889K | ﹤0.01% |
+90,700
| New | +$894K |
|
|
SAIL
3025
CALL
DELISTED
SailPoint Technologies Holdings, Inc. Common Stock
SAIL
| $889K | ﹤0.01% |
18,400
+16,900
| +1,127% | +$829K |
|
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.