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 | |
|---|---|---|---|---|---|---|
|
VRN
4351
CALL
DELISTED
Veren
VRN
| $345K | ﹤0.01% |
64,700
+6,200
| +11% | +$30.2K |
|
4352
CALL
Clearwater Paper
CLW
$339M
| $344K | ﹤0.01% |
9,400
+8,000
| +571% | +$319K |
|
4353
CMS Energy
CMS
$22.6B
| $344K | ﹤0.01% |
5,302
-6,536
| -55% | -$401K |
|
4354
PUT
Genius Sports
GENI
$1.85B
| $344K | ﹤0.01% |
45,300
-9,900
| -18% | -$133K |
|
4355
PUT
Mid-America Apartment Communities
MAA
$15.4B
| $344K | ﹤0.01% |
1,500
-20,100
| -93% | -$4.16M |
|
|
EGIO
4356
CALL
DELISTED
Edgio, Inc. Common Stock
EGIO
| $344K | ﹤0.01% |
2,513
-4,657
| -65% | -$554K |
|
4357
Aquestive Therapeutics
AQST
$463M
| $343K | ﹤0.01% |
+88,253
| New | +$443K |
|
4358
CALL
Innoviva
INVA
$1.55B
| $343K | ﹤0.01% |
19,900
+12,200
| +158% | +$208K |
|
4359
Senseonics Holdings Inc
SENS
$263M
| $343K | ﹤0.01% |
6,433
-1,004
| -14% | -$65.2K |
|
4360
PUT
Verisk Analytics
VRSK
$25.4B
| $343K | ﹤0.01% |
1,500
-19,500
| -93% | -$4.25M |
|
|
AHT
4361
Ashford Hospitality Trust
AHT
$20.9M
| $342K | ﹤0.01% |
3,563
-33,482
| -90% | -$4.17M |
|
4362
PUT
RCI Hospitality Holdings
RICK
$192M
| $342K | ﹤0.01% |
4,400
-5,700
| -56% | -$397K |
|
4363
CALL
Safe Bulkers
SB
$795M
| $342K | ﹤0.01% |
90,800
+71,000
| +359% | +$289K |
|
4364
AerSale
ASLE
$293M
| $341K | ﹤0.01% |
+19,231
| New | +$359K |
|
4365
PUT
Halozyme
HALO
$9.79B
| $341K | ﹤0.01% |
8,500
-18,600
| -69% | -$694K |
|
4366
PUT
indie Semiconductor
INDI
$682M
| $341K | ﹤0.01% |
28,500
+12,200
| +75% | +$155K |
|
4367
Synopsys
SNPS
$74.4B
| $341K | ﹤0.01% |
+928
| New | +$313K |
|
|
JAMF
4368
DELISTED
Jamf
JAMF
| $340K | ﹤0.01% |
+8,954
| New | +$347K |
|
4369
PUT
MillerKnoll
MLKN
$1.53B
| $340K | ﹤0.01% |
8,700
-39,700
| -82% | -$1.54M |
|
4370
PUT
Sturm, Ruger & Co
RGR
$594M
| $340K | ﹤0.01% |
5,000
-28,900
| -85% | -$2.1M |
|
|
WCN
4371
CALL
Waste Connections
WCN
$42.2B
| $340K | ﹤0.01% |
2,500
-22,900
| -90% | -$3.04M |
|
4372
PUT
Reinsurance Group of America
RGA
$15.5B
| $339K | ﹤0.01% |
3,100
+1,900
| +158% | +$211K |
|
4373
CALL
Northwest Bancshares
NWBI
$2.3B
| $338K | ﹤0.01% |
23,900
+17,800
| +292% | +$248K |
|
4374
Zions Bancorporation
ZION
$10.2B
| $338K | ﹤0.01% |
+5,364
| New | +$342K |
|
|
JOAN
4375
DELISTED
JOANN, Inc. Common Stock
JOAN
| $338K | ﹤0.01% |
+32,638
| New | +$341K |
|
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.