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 | |
|---|---|---|---|---|---|---|
5676
Gold Royalty Corp
GROY
$600M
| $58K | ﹤0.01% |
25,101
+4,887
| +24% | +$12.2K |
|
5677
PUT
Hycroft Mining Holding Corp
HYMC
$1.82B
| $58K | ﹤0.01% |
10,980
-25,440
| -70% | -$162K |
|
5678
Immunic
IMUX
$190M
| $58K | ﹤0.01% |
4,201
+2,389
| +132% | +$65.2K |
|
5679
NGL Energy Partners
NGL
$2.05B
| $58K | ﹤0.01% |
48,231
+9,608
| +25% | +$12.1K |
|
5680
PUT
Oscar Health
OSCR
$9.41B
| $58K | ﹤0.01% |
23,900
-500
| -2% | -$1.56K |
|
5681
PUT
Portland General Electric
POR
$5.8B
| $58K | ﹤0.01% |
1,200
-100
| -8% | -$4.63K |
|
5682
Quest Resource Holding
QRHC
$26.8M
| $58K | ﹤0.01% |
9,622
+4,702
| +96% | +$35.1K |
|
5683
Spruce Power Holding Corp
SPRU
$35.8M
| $58K | ﹤0.01% |
7,917
+6,252
| +375% | +$44.4K |
|
5684
PUT
Vroom Inc
VRM
$39M
| $58K | ﹤0.01% |
718
-5,848
| -89% | -$502K |
|
5685
CALL
Energous
WATT
$77.6M
| $58K | ﹤0.01% |
117
+42
| +56% | +$25.3K |
|
|
ATHX
5686
DELISTED
Athersys, Inc. Common Stock
ATHX
| $58K | ﹤0.01% |
69,570
-4,449
| -6% | -$5.54K |
|
|
CTIC
5687
PUT
DELISTED
CTI BioPharma Corp. (DE) Common Stock
CTIC
| $58K | ﹤0.01% |
9,800
-8,300
| -46% | -$45.3K |
|
5688
ACM Research
ACMR
$5.42B
| $57K | ﹤0.01% |
7,462
-28,253
| -79% | -$239K |
|
|
AGS
5689
DELISTED
PlayAGS
AGS
| $57K | ﹤0.01% |
+11,328
| New | +$63.9K |
|
5690
CALL
BeyondSpring
BYSI
$47.3M
| $57K | ﹤0.01% |
30,500
-3,800
| -11% | -$3.59K |
|
5691
CALL
Camtek
CAMT
$6.18B
| $57K | ﹤0.01% |
2,600
-40,100
| -94% | -$926K |
|
5692
PUT
CareTrust REIT
CTRE
$9.91B
| $57K | ﹤0.01% |
3,100
-300
| -9% | -$5.6K |
|
5693
PUT
Brinker International
EAT
$9.17B
| $57K | ﹤0.01% |
1,800
-279,600
| -99% | -$8.79M |
|
5694
CALL
Korea Electric Power
KEP
$15.3B
| $57K | ﹤0.01% |
6,600
+5,700
| +633% | +$40.6K |
|
5695
PUT
Kymera Therapeutics
KYMR
$8.51B
| $57K | ﹤0.01% |
2,300
-2,800
| -55% | -$74.7K |
|
5696
CALL
OceanFirst Financial
OCFC
$1.68B
| $57K | ﹤0.01% |
+2,700
| New | +$58.9K |
|
5697
PUT
OneWater Marine
ONEW
$204M
| $57K | ﹤0.01% |
2,000
+1,600
| +400% | +$49.9K |
|
5698
PUT
Pulse Biosciences
PLSE
$2.43B
| $57K | ﹤0.01% |
+20,700
| New | +$46.5K |
|
5699
PUT
Purple Innovation
PRPL
$35.3M
| $57K | ﹤0.01% |
484
-1,912
| -80% | -$209K |
|
5700
PUT
FreightCar America
RAIL
$261M
| $57K | ﹤0.01% |
17,900
-1,500
| -8% | -$5.62K |
|
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.