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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
BZUN
4001
CALL
Baozun
BZUN
$173M
| $239K | ﹤0.01% |
45,200
-24,500
| -35% | -$117K |
|
4002
CALL
Charles River Laboratories
CRL
$11.7B
| $239K | ﹤0.01% |
1,100
-6,400
| -85% | -$1.4M |
|
4003
PUT
Equinor
EQNR
$96.5B
| $239K | ﹤0.01% |
6,700
-11,700
| -64% | -$420K |
|
4004
Diamondback Energy
FANG
$55.5B
| $239K | ﹤0.01% |
1,750
+1,740
| +17,400% | +$254K |
|
4005
Getty Images
GETY
$164M
| $239K | ﹤0.01% |
43,125
+43,024
| +42,598% | +$241K |
|
|
GOGL
4006
CALL
DELISTED
Golden Ocean Group
GOGL
| $239K | ﹤0.01% |
27,600
-46,300
| -63% | -$402K |
|
4007
PUT
STAG Industrial
STAG
$7.58B
| $239K | ﹤0.01% |
7,400
-8,200
| -53% | -$257K |
|
4008
CALL
American Well
AMWL
$189M
| $238K | ﹤0.01% |
4,220
-885
| -17% | -$63.8K |
|
4009
Altisource Portfolio Solutions
ASPS
$57.2M
| $238K | ﹤0.01% |
3,149
+998
| +46% | +$103K |
|
4010
CRISPR Therapeutics
CRSP
$4.71B
| $238K | ﹤0.01% |
5,858
+3,518
| +150% | +$187K |
|
4011
PUT
Imperial Oil
IMO
$62.2B
| $238K | ﹤0.01% |
+4,900
| New | +$253K |
|
4012
CALL
Archer Aviation
ACHR
$3.63B
| $237K | ﹤0.01% |
126,900
+33,700
| +36% | +$83.1K |
|
4013
CALL
Teekay Tankers
TNK
$2.68B
| $237K | ﹤0.01% |
7,700
-97,800
| -93% | -$3.11M |
|
4014
ARK Autonomous Technology & Robotics ETF
ARKQ
$1.87B
| $236K | ﹤0.01% |
+5,769
| New | +$254K |
|
4015
CALL
Atossa Therapeutics
ATOS
$23.7M
| $236K | ﹤0.01% |
29,793
+16,766
| +129% | +$193K |
|
4016
CALL
Citius Pharmaceuticals
CTXR
$14M
| $236K | ﹤0.01% |
11,976
-608
| -5% | -$16.6K |
|
4017
FuelCell Energy
FCEL
$1.59B
| $236K | ﹤0.01% |
2,840
-10,987
| -79% | -$1.06M |
|
4018
PUT
Rambus
RMBS
$9.55B
| $236K | ﹤0.01% |
6,600
-16,800
| -72% | -$568K |
|
4019
CALL
Root
ROOT
$937M
| $236K | ﹤0.01% |
52,600
-59,800
| -53% | -$412K |
|
4020
Sprott Uranium Miners ETF
URNM
$1.73B
| $236K | ﹤0.01% |
7,447
-3,283
| -31% | -$107K |
|
4021
Atomera
ATOM
$187M
| $235K | ﹤0.01% |
37,886
+21,674
| +134% | +$178K |
|
4022
Beam Therapeutics
BEAM
$2.7B
| $235K | ﹤0.01% |
+6,027
| New | +$270K |
|
4023
CALL
Haemonetics
HAE
$3.78B
| $235K | ﹤0.01% |
3,000
+2,400
| +400% | +$193K |
|
4024
CALL
Highwoods Properties
HIW
$3.89B
| $235K | ﹤0.01% |
8,400
+1,100
| +15% | +$30.6K |
|
4025
CALL
ACI Worldwide
ACIW
$6.14B
| $234K | ﹤0.01% |
10,200
-900
| -8% | -$19.4K |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.