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 | |
|---|---|---|---|---|---|---|
2526
iShares MSCI Malaysia ETF
EWM
$305M
| $1.29M | ﹤0.01% |
+51,429
| New | +$1.3M |
|
2527
CALL
Fulgent Genetics
FLGT
$559M
| $1.29M | ﹤0.01% |
12,800
-23,800
| -65% | -$2.09M |
|
2528
SiTime
SITM
$16.6B
| $1.29M | ﹤0.01% |
+4,402
| New | +$1.15M |
|
|
HA
2529
CALL
DELISTED
Hawaiian Holdings, Inc.
HA
| $1.29M | ﹤0.01% |
70,100
+15,800
| +29% | +$320K |
|
|
BTAQ
2530
CALL
DELISTED
Burgundy Technology Acquisition Corporation Class A Ordinary shares
BTAQ
| $1.29M | ﹤0.01% |
128,600
+34,300
| +36% | +$342K |
|
2531
CALL
AutoNation
AN
$6.97B
| $1.28M | ﹤0.01% |
11,000
-43,700
| -80% | -$5.26M |
|
2532
CALL
SSR Mining
SSRM
$5.57B
| $1.28M | ﹤0.01% |
72,600
+6,000
| +9% | +$103K |
|
2533
CALL
Hyliion Holdings
HYLN
$663M
| $1.28M | ﹤0.01% |
207,100
-10,300
| -5% | -$73.6K |
|
|
VLRS
2534
PUT
Controladora Vuela Compania de Aviacion
VLRS
$876M
| $1.28M | ﹤0.01% |
71,400
+54,600
| +325% | +$979K |
|
2535
CALL
Keurig Dr Pepper
KDP
$40.4B
| $1.28M | ﹤0.01% |
34,800
-16,800
| -33% | -$592K |
|
2536
Methanex
MEOH
$4.32B
| $1.28M | ﹤0.01% |
32,416
+25,324
| +357% | +$1.12M |
|
2537
GitLab
GTLB
$5.28B
| $1.28M | ﹤0.01% |
+14,725
| New | +$1.51M |
|
|
MTBL
2538
CALL
DELISTED
Moatable, Inc. American Depositary Share (each representing forty-five (45) Class A Ordinary Shares)
MTBL
| $1.28M | ﹤0.01% |
872,000
+837,000
| +2,391% | +$1.84M |
|
2539
CALL
Yelp
YELP
$1.38B
| $1.28M | ﹤0.01% |
35,300
+21,900
| +163% | +$823K |
|
2540
CALL
OneMain Financial
OMF
$6.9B
| $1.28M | ﹤0.01% |
25,500
-46,100
| -64% | -$2.44M |
|
2541
CALL
Chefs' Warehouse
CHEF
$3.87B
| $1.27M | ﹤0.01% |
38,300
+14,300
| +60% | +$472K |
|
2542
PUT
ManpowerGroup
MAN
$2.39B
| $1.27M | ﹤0.01% |
13,100
-3,200
| -20% | -$321K |
|
2543
CALL
Cars.com
CARS
$641M
| $1.27M | ﹤0.01% |
79,200
+69,600
| +725% | +$994K |
|
2544
ReNew
RNW
$2.24B
| $1.27M | ﹤0.01% |
+163,298
| New | +$1.44M |
|
|
PTRA
2545
CALL
DELISTED
Proterra Inc. Common Stock
PTRA
| $1.27M | ﹤0.01% |
143,900
+36,100
| +33% | +$370K |
|
2546
CALL
Taylor Morrison
TMHC
| $1.27M | ﹤0.01% |
36,300
+31,500
| +656% | +$983K |
|
|
WW
2547
PUT
DELISTED
WW International
WW
| $1.27M | ﹤0.01% |
78,700
-43,400
| -36% | -$779K |
|
2548
PUT
Schwab US Broad Market ETF
SCHB
$42.8B
| $1.27M | ﹤0.01% |
96,000
+51,600
| +116% | +$949K |
|
2549
PUT
Perion Network
PERI
$367M
| $1.27M | ﹤0.01% |
52,700
+42,400
| +412% | +$1.03M |
|
|
ARNC
2550
CALL
DELISTED
Arconic Corporation
ARNC
| $1.27M | ﹤0.01% |
38,400
-16,600
| -30% | -$514K |
|
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.