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 | |
|---|---|---|---|---|---|---|
|
DS
3476
CALL
DELISTED
Drive Shack Inc.
DS
| $641K | ﹤0.01% |
448,800
+355,300
| +380% | +$782K |
|
|
TWOU
3477
CALL
DELISTED
2U Inc
TWOU
| $640K | ﹤0.01% |
1,063
-800
| -43% | -$638K |
|
|
RVNC
3478
CALL
DELISTED
Revance Therapeutics, Inc.
RVNC
| $639K | ﹤0.01% |
39,200
-700
| -2% | -$11.7K |
|
3479
PUT
Petco
WOOF
$802M
| $637K | ﹤0.01% |
32,200
-59,500
| -65% | -$1.3M |
|
|
PTRA
3480
PUT
DELISTED
Proterra Inc. Common Stock
PTRA
| $637K | ﹤0.01% |
72,200
+41,700
| +137% | +$427K |
|
3481
Hormel Foods
HRL
$14.2B
| $636K | ﹤0.01% |
+13,038
| New | +$572K |
|
3482
Helmerich & Payne
HP
$3.28B
| $635K | ﹤0.01% |
26,799
-4,719
| -15% | -$134K |
|
|
SHLX
3483
CALL
DELISTED
Shell Midstream Partners, L.P.
SHLX
| $635K | ﹤0.01% |
55,200
-4,800
| -8% | -$56.6K |
|
3484
PUT
Cirrus Logic
CRUS
$6.8B
| $634K | ﹤0.01% |
6,900
-6,500
| -49% | -$540K |
|
3485
PUT
Grid Dynamics Holdings
GDYN
$523M
| $634K | ﹤0.01% |
16,700
+10,000
| +149% | +$346K |
|
3486
CALL
Iron Mountain
IRM
$37.3B
| $633K | ﹤0.01% |
12,100
-105,300
| -90% | -$4.98M |
|
3487
PUT
Hayward Holdings
HAYW
$3.19B
| $632K | ﹤0.01% |
24,100
+21,700
| +904% | +$526K |
|
3488
PUT
Lufax Holding
LU
$1.36B
| $632K | ﹤0.01% |
28,100
+11,250
| +67% | +$295K |
|
|
FFAI
3489
CALL
Faraday Future Intelligent Electric
FFAI
$11.9M
| – | – |
0
| – | – |
|
3490
PUT
Fidelity National Financial
FNF
$14.5B
| $631K | ﹤0.01% |
12,584
+3,328
| +36% | +$159K |
|
3491
CALL
Insmed
INSM
$22.8B
| $631K | ﹤0.01% |
23,200
+19,600
| +544% | +$560K |
|
3492
CALL
Magnachip Semiconductor
MX
$117M
| $631K | ﹤0.01% |
30,100
+19,600
| +187% | +$362K |
|
|
GBT
3493
CALL
DELISTED
Global Blood Therapeutics, Inc.
GBT
| $629K | ﹤0.01% |
21,500
-5,600
| -21% | -$173K |
|
3494
PUT
8x8 Inc
EGHT
$275M
| $628K | ﹤0.01% |
37,500
-30,500
| -45% | -$639K |
|
|
GOGL
3495
CALL
DELISTED
Golden Ocean Group
GOGL
| $628K | ﹤0.01% |
67,600
+59,800
| +767% | +$542K |
|
3496
PUT
USA Compression Partners
USAC
$3.75B
| $628K | ﹤0.01% |
36,000
+22,500
| +167% | +$359K |
|
3497
PUT
Federal Realty Investment Trust
FRT
$11B
| $627K | ﹤0.01% |
4,600
-1,400
| -23% | -$178K |
|
3498
PUT
SandRidge Energy
SD
$489M
| $627K | ﹤0.01% |
60,000
-17,800
| -23% | -$211K |
|
3499
CALL
Telus
TU
$16.7B
| $626K | ﹤0.01% |
26,600
-47,900
| -64% | -$1.1M |
|
|
AUY
3500
CALL
DELISTED
Yamana Gold, Inc.
AUY
| $624K | ﹤0.01% |
148,000
+32,500
| +28% | +$135K |
|
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.