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 | |
|---|---|---|---|---|---|---|
5601
PUT
Equinor
EQNR
$94.7B
| $150K | ﹤0.01% |
5,700
-4,500
| -44% | -$119K |
|
5602
CALL
Recon Technology
RCON
$36.7M
| $150K | ﹤0.01% |
6,378
+5,289
| +486% | +$195K |
|
5603
Alpha Pro Tech
APT
$50.4M
| $149K | ﹤0.01% |
25,116
+20,145
| +405% | +$117K |
|
|
ARR
5604
PUT
Armour Residential REIT
ARR
$2.33B
| $149K | ﹤0.01% |
3,040
-1,120
| -27% | -$58K |
|
5605
CALL
Evercore
EVR
$12.2B
| $149K | ﹤0.01% |
1,100
-20,400
| -95% | -$2.97M |
|
5606
PUT
Huntington Ingalls Industries
HII
$12.9B
| $149K | ﹤0.01% |
800
-27,800
| -97% | -$5.37M |
|
5607
PUT
Mativ Holdings
MATV
$496M
| $149K | ﹤0.01% |
5,000
+4,000
| +400% | +$132K |
|
5608
PUT
MGIC Investment
MTG
$6.25B
| $149K | ﹤0.01% |
10,400
-2,900
| -22% | -$43.9K |
|
5609
CALL
Pilgrim's Pride
PPC
$6.64B
| $149K | ﹤0.01% |
5,300
+2,700
| +104% | +$76.8K |
|
|
SOHU
5610
Sohu.com
SOHU
$359M
| $149K | ﹤0.01% |
9,183
-7,954
| -46% | -$150K |
|
5611
Unum
UNM
$14.3B
| $149K | ﹤0.01% |
6,105
-1,229
| -17% | -$31.5K |
|
|
BRDS
5612
CALL
DELISTED
Bird Global, Inc.
BRDS
| $149K | ﹤0.01% |
+972
| New | +$175K |
|
|
SEAC
5613
CALL
DELISTED
Seachange International Inc
SEAC
| $149K | ﹤0.01% |
4,680
+2,620
| +127% | +$56.5K |
|
|
APTS
5614
PUT
DELISTED
Preferred Apartment Communities, Inc.
APTS
| $149K | ﹤0.01% |
8,300
-25,500
| -75% | -$350K |
|
5615
CALL
Affiliated Managers Group
AMG
$10.1B
| $148K | ﹤0.01% |
900
-14,900
| -94% | -$2.5M |
|
5616
CALL
Establishment Labs
ESTA
$2.79B
| $148K | ﹤0.01% |
2,200
+2,100
| +2,100% | +$147K |
|
5617
Hilton Grand Vacations
HGV
$3.54B
| $148K | ﹤0.01% |
2,841
+831
| +41% | +$41.6K |
|
|
LAND
5618
PUT
Gladstone Land Corp
LAND
$351M
| $148K | ﹤0.01% |
4,400
-1,900
| -30% | -$51.2K |
|
5619
PUT
Pembina Pipeline
PBA
$27.9B
| $148K | ﹤0.01% |
4,900
-44,900
| -90% | -$1.43M |
|
5620
CALL
SI-BONE Inc
SIBN
$816M
| $148K | ﹤0.01% |
6,700
-1,600
| -19% | -$34.4K |
|
5621
Uranium Energy
UEC
$4.92B
| $148K | ﹤0.01% |
44,471
-25,280
| -36% | -$97.3K |
|
|
SUNW
5622
CALL
DELISTED
Sunworks, Inc.
SUNW
| $148K | ﹤0.01% |
48,300
-43,400
| -47% | -$222K |
|
|
KRA
5623
CALL
DELISTED
Kraton Corporation
KRA
| $148K | ﹤0.01% |
3,200
-73,600
| -96% | -$3.38M |
|
|
HUSE
5624
PUT
DELISTED
Strategy Shares US Market Rotation Strategy ETF
HUSE
| $148K | ﹤0.01% |
5,700
+3,500
| +159% | +$90.9K |
|
5625
PUT
Ascendis Pharma A/S
ASND
$16.1B
| $147K | ﹤0.01% |
1,100
-1,900
| -63% | -$283K |
|
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.