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 | |
|---|---|---|---|---|---|---|
4826
PUT
Sportradar
SRAD
$4.3B
| $253K | ﹤0.01% |
+14,400
| New | +$292K |
|
|
NMTR
4827
CALL
DELISTED
9 Meters Biopharma
NMTR
| $253K | ﹤0.01% |
12,930
+2,335
| +22% | +$52.2K |
|
|
AQUA
4828
DELISTED
Evoqua Water Technologies Corp. Common Stock
AQUA
| $253K | ﹤0.01% |
5,417
-15,018
| -73% | -$654K |
|
4829
PUT
AST SpaceMobile
ASTS
$17.6B
| $252K | ﹤0.01% |
31,800
-229,800
| -88% | -$2.36M |
|
4830
Guardant Health
GH
$21.7B
| $252K | ﹤0.01% |
+2,521
| New | +$261K |
|
4831
PUT
Helios Technologies
HLIO
$2.57B
| $252K | ﹤0.01% |
+2,400
| New | +$233K |
|
|
HPP
4832
CALL
Hudson Pacific Properties
HPP
$747M
| $252K | ﹤0.01% |
1,457
-1,400
| -49% | -$255K |
|
4833
Lantheus
LNTH
$6.49B
| $252K | ﹤0.01% |
+8,738
| New | +$232K |
|
|
ACH
4834
PUT
Accendra Health
ACH
$237M
| $252K | ﹤0.01% |
5,800
-600
| -9% | -$23.5K |
|
4835
CALL
Planet Labs
PL
$7.3B
| $252K | ﹤0.01% |
+41,100
| New | +$389K |
|
|
BCPC
4836
CALL
Balchem Corp
BCPC
$5.38B
| $252K | ﹤0.01% |
1,500
+1,000
| +200% | +$161K |
|
|
TRHC
4837
DELISTED
Tabula Rasa HealthCare, Inc. Common Stock
TRHC
| $252K | ﹤0.01% |
16,849
+14,494
| +615% | +$264K |
|
|
ENDP
4838
CALL
DELISTED
Endo International plc
ENDP
| $252K | ﹤0.01% |
67,200
+31,200
| +87% | +$151K |
|
|
LMFA
4839
CALL
DELISTED
LM Funding America
LMFA
| $251K | ﹤0.01% |
+345
| New | +$294K |
|
4840
PUT
Viper Energy
VNOM
$8.71B
| $251K | ﹤0.01% |
11,800
-17,900
| -60% | -$401K |
|
4841
PUT
Vera Bradley
VRA
$97M
| $251K | ﹤0.01% |
29,500
+26,100
| +768% | +$251K |
|
4842
CALL
Dolphin Entertainment
DLPN
$13.3M
| $250K | ﹤0.01% |
+14,700
| New | +$300K |
|
4843
Teekay Tankers
TNK
$2.75B
| $250K | ﹤0.01% |
22,951
+16,591
| +261% | +$210K |
|
|
SRC
4844
CALL
DELISTED
SPIRIT REALTY CAPITAL, INC.
SRC
| $250K | ﹤0.01% |
5,200
+3,900
| +300% | +$186K |
|
4845
PUT
DHT Holdings
DHT
$2.99B
| $249K | ﹤0.01% |
48,100
-34,000
| -41% | -$203K |
|
4846
PUT
Graco
GGG
$12.9B
| $249K | ﹤0.01% |
3,100
+3,000
| +3,000% | +$228K |
|
|
TSE
4847
DELISTED
Trinseo
TSE
| $249K | ﹤0.01% |
4,751
-1,005
| -17% | -$54.4K |
|
|
WSR
4848
CALL
DELISTED
Whitestone REIT
WSR
| $249K | ﹤0.01% |
24,600
+18,600
| +310% | +$181K |
|
|
DRE
4849
CALL
DELISTED
Duke Realty Corp.
DRE
| $249K | ﹤0.01% |
3,800
+3,600
| +1,800% | +$208K |
|
4850
PUT
Crescent Energy
CRGY
$3.79B
| $248K | ﹤0.01% |
+19,600
| New | +$271K |
|
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.