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 | |
|---|---|---|---|---|---|---|
6001
PUT
ESS Tech
GWH
$22M
| $45K | ﹤0.01% |
1,253
-1,200
| -49% | -$61.5K |
|
6002
CALL
Kaiser Aluminum
KALU
$2.61B
| $45K | ﹤0.01% |
600
+400
| +200% | +$32K |
|
|
OPLN
6003
CALL
Openlane
OPLN
$4.21B
| $45K | ﹤0.01% |
3,500
-7,300
| -68% | -$97.9K |
|
6004
CALL
Koppers
KOP
$943M
| $45K | ﹤0.01% |
1,600
-600
| -27% | -$16.2K |
|
|
PPBT
6005
CALL
Purple Biotech
PPBT
$1.31M
| $45K | ﹤0.01% |
166
+88
| +113% | +$33.8K |
|
6006
Porch Group
PRCH
$1.64B
| $45K | ﹤0.01% |
24,143
-12,342
| -34% | -$21.8K |
|
6007
PUT
Sanmina
SANM
$9.95B
| $45K | ﹤0.01% |
800
+700
| +700% | +$41.4K |
|
6008
CALL
SES AI
SES
$203M
| $45K | ﹤0.01% |
14,400
+7,500
| +109% | +$36.3K |
|
|
HTO
6009
H2O America
HTO
$2.57B
| $45K | ﹤0.01% |
+563
| New | +$40.3K |
|
6010
CALL
Standard Motor Products
SMP
$851M
| $45K | ﹤0.01% |
1,300
-4,800
| -79% | -$176K |
|
6011
Televisa
TV
$1.48B
| $45K | ﹤0.01% |
9,872
+266
| +3% | +$1.38K |
|
6012
CALL
Veritone
VERI
$101M
| $45K | ﹤0.01% |
8,500
-1,300
| -13% | -$8.33K |
|
|
SEI
6013
Solaris Energy Infrastructure
SEI
$3.15B
| $45K | ﹤0.01% |
4,585
+397
| +9% | +$4.35K |
|
|
SEEL
6014
PUT
DELISTED
Seelos Therapeutics, Inc. Common Stock
SEEL
| $45K | ﹤0.01% |
17
-3
| -15% | -$10.5K |
|
|
ASXC
6015
CALL
DELISTED
Asensus Surgical, Inc.
ASXC
| $45K | ﹤0.01% |
130,900
+15,200
| +13% | +$6.18K |
|
|
ICD
6016
DELISTED
Independence Contract Drilling, Inc.
ICD
| $45K | ﹤0.01% |
13,977
+13,829
| +9,344% | +$48.3K |
|
|
WE
6017
PUT
DELISTED
WeWork Inc.
WE
| $45K | ﹤0.01% |
793
-745
| -48% | -$69.8K |
|
6018
PUT
Argan
AGX
$8B
| $44K | ﹤0.01% |
1,200
-900
| -43% | -$31.7K |
|
6019
CALL
Alarm.com
ALRM
$2.71B
| $44K | ﹤0.01% |
900
-500
| -36% | -$27.6K |
|
6020
CALL
ANI Pharmaceuticals
ANIP
$1.8B
| $44K | ﹤0.01% |
1,100
-900
| -45% | -$33.8K |
|
|
CVSA
6021
Covista Inc
CVSA
$4.25B
| $44K | ﹤0.01% |
+1,248
| New | +$48.7K |
|
6022
BARK
BARK
$81.8M
| $44K | ﹤0.01% |
1,502
-353
| -19% | -$11.7K |
|
6023
PUT
Evergy
EVRG
$19.1B
| $44K | ﹤0.01% |
700
-600
| -46% | -$36K |
|
6024
CALL
Forte Biosciences
FBRX
$1.57B
| $44K | ﹤0.01% |
1,764
-20
| -1% | -$513 |
|
|
GMS
6025
CALL
DELISTED
GMS Inc
GMS
| $44K | ﹤0.01% |
900
+100
| +13% | +$4.79K |
|
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.