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 | |
|---|---|---|---|---|---|---|
1451
Vanguard Total Stock Market ETF
VTI
$654B
| $3.73M | ﹤0.01% |
15,461
+5,383
| +53% | +$1.27M |
|
1452
JetBlue
JBLU
$1.96B
| $3.73M | ﹤0.01% |
261,792
+143,007
| +120% | +$2.1M |
|
1453
Citizens Financial Group
CFG
$30.4B
| $3.72M | ﹤0.01% |
78,794
+26,240
| +50% | +$1.26M |
|
|
COUP
1454
DELISTED
Coupa Software Incorporated
COUP
| $3.72M | ﹤0.01% |
23,562
+22,672
| +2,547% | +$4.67M |
|
1455
CALL
Otis Worldwide
OTIS
$27.4B
| $3.72M | ﹤0.01% |
42,700
+33,900
| +385% | +$2.84M |
|
1456
PUT
Goodyear
GT
$2.07B
| $3.72M | ﹤0.01% |
174,300
+44,300
| +34% | +$920K |
|
1457
Virgin Galactic
SPCE
$320M
| $3.71M | ﹤0.01% |
13,879
+13,859
| +69,295% | +$5.01M |
|
1458
CALL
FuelCell Energy
FCEL
$1.7B
| $3.71M | ﹤0.01% |
23,770
+8,243
| +53% | +$1.94M |
|
1459
PUT
Amplify Junior Silver Miners ETF
SILJ
$3.27B
| $3.71M | ﹤0.01% |
279,400
-131,800
| -32% | -$1.7M |
|
1460
CALL
Axalta
AXTA
$7.01B
| $3.7M | ﹤0.01% |
111,700
+99,500
| +816% | +$3.16M |
|
|
VSXY
1461
PUT
Victoria's Secret
VSXY
$6.64B
| $3.69M | ﹤0.01% |
+66,500
| New | +$3.47M |
|
1462
PUT
Zebra Technologies
ZBRA
$12.4B
| $3.69M | ﹤0.01% |
6,200
-200
| -3% | -$114K |
|
|
MRSH
1463
CALL
Marsh
MRSH
$86.3B
| $3.68M | ﹤0.01% |
21,200
+13,200
| +165% | +$2.19M |
|
1464
Hilton Worldwide
HLT
$74B
| $3.67M | ﹤0.01% |
23,563
+21,960
| +1,370% | +$3.16M |
|
1465
CALL
KeyCorp
KEY
$24.3B
| $3.67M | ﹤0.01% |
158,900
+52,600
| +49% | +$1.22M |
|
1466
PUT
Extra Space Storage
EXR
$31.2B
| $3.67M | ﹤0.01% |
16,200
+15,500
| +2,214% | +$3.07M |
|
|
NUAN
1467
CALL
DELISTED
Nuance Communications, Inc.
NUAN
| $3.67M | ﹤0.01% |
66,400
-67,000
| -50% | -$3.7M |
|
1468
CALL
Rocket Companies
RKT
$36.9B
| $3.67M | ﹤0.01% |
262,000
-1,096,200
| -81% | -$17.5M |
|
1469
Sunrun
RUN
$2.37B
| $3.66M | ﹤0.01% |
106,782
+30,559
| +40% | +$1.43M |
|
|
VTLE
1470
PUT
DELISTED
Vital Energy
VTLE
| $3.66M | ﹤0.01% |
60,900
+48,800
| +403% | +$3.44M |
|
|
SAVE
1471
CALL
DELISTED
Spirit Airlines, Inc.
SAVE
| $3.66M | ﹤0.01% |
167,500
+38,600
| +30% | +$897K |
|
1472
CALL
Vodafone
VOD
$34.9B
| $3.66M | ﹤0.01% |
245,000
+118,300
| +93% | +$1.81M |
|
|
P
1473
PUT
Everpure Inc
P
$24.8B
| $3.65M | ﹤0.01% |
112,300
+47,800
| +74% | +$1.39M |
|
1474
Marathon Digital Holdings
MARA
$4.62B
| $3.65M | ﹤0.01% |
111,174
+67,901
| +157% | +$3.25M |
|
1475
BioNTech
BNTX
$22.6B
| $3.65M | ﹤0.01% |
14,156
+4,317
| +44% | +$1.18M |
|
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.