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 | |
|---|---|---|---|---|---|---|
6576
CALL
Perrigo
PRGO
$1.4B
| $27K | ﹤0.01% |
800
-2,500
| -76% | -$88.1K |
|
6577
PUT
Relmada Therapeutics
RLMD
$557M
| $27K | ﹤0.01% |
8,000
-126,000
| -94% | -$1.11M |
|
|
SAND
6578
DELISTED
Sandstorm Gold
SAND
| $27K | ﹤0.01% |
+5,173
| New | +$26.4K |
|
6579
PUT
Workhorse Group
WKHS
$33.2M
| $27K | ﹤0.01% |
6
-70
| -92% | -$482K |
|
|
KLRS
6580
Kalaris Therapeutics
KLRS
$83.5M
| $27K | ﹤0.01% |
234
+209
| +836% | +$35.4K |
|
|
OMGA
6581
PUT
DELISTED
Omega Therapeutics, Inc. Common Stock
OMGA
| $27K | ﹤0.01% |
4,900
| – | – |
|
|
CTLT
6582
PUT
DELISTED
CATALENT, INC.
CTLT
| $27K | ﹤0.01% |
600
-1,000
| -63% | -$54.4K |
|
|
TRVN
6583
PUT
DELISTED
Trevena, Inc.
TRVN
| $27K | ﹤0.01% |
772
+742
| +2,473% | +$61.7K |
|
|
TTOO
6584
PUT
DELISTED
T2 Biosystems, Inc
TTOO
| $27K | ﹤0.01% |
191
+187
| +4,675% | +$38.4K |
|
|
ACER
6585
DELISTED
Acer Therapeutics Inc
ACER
| $27K | ﹤0.01% |
11,152
-1,725
| -13% | -$2.96K |
|
|
CINC
6586
CALL
DELISTED
CinCor Pharma, Inc. Common Stock
CINC
| $27K | ﹤0.01% |
2,200
+2,100
| +2,100% | +$50K |
|
|
CEI
6587
DELISTED
Camber Energy, Inc
CEI
| $27K | ﹤0.01% |
+13,523
| New | +$85.1K |
|
6588
AMC Entertainment Holdings
AMC
$2.52B
| $26K | ﹤0.01% |
650
-170
| -21% | -$10.7K |
|
6589
PUT
Aurora
AUR
$12.6B
| $26K | ﹤0.01% |
21,600
+13,400
| +163% | +$22.9K |
|
6590
CALL
Brown-Forman Class B
BF.B
$13.2B
| $26K | ﹤0.01% |
+500
| New | +$33.9K |
|
6591
CALL
Consolidated Water Co
CWCO
$467M
| $26K | ﹤0.01% |
1,800
-1,700
| -49% | -$27.3K |
|
|
DENN
6592
PUT
DELISTED
Denny's
DENN
| $26K | ﹤0.01% |
2,900
-2,800
| -49% | -$30.3K |
|
6593
PUT
Enovis
ENOV
$1.68B
| $26K | ﹤0.01% |
500
-100
| -17% | -$5.16K |
|
6594
EyePoint Inc
EYPT
$1.03B
| $26K | ﹤0.01% |
+7,681
| New | +$33.9K |
|
6595
Fortuna Silver Mines
FSM
$2.55B
| $26K | ﹤0.01% |
6,975
-195,791
| -97% | -$647K |
|
6596
PUT
Glaukos
GKOS
$9.83B
| $26K | ﹤0.01% |
600
-5,300
| -90% | -$261K |
|
6597
PUT
Grocery Outlet
GO
$909M
| $26K | ﹤0.01% |
900
-1,100
| -55% | -$34.5K |
|
6598
HEICO Corp
HEI
$49.8B
| $26K | ﹤0.01% |
175
+156
| +821% | +$24.3K |
|
6599
CALL
Hilton Grand Vacations
HGV
$3.59B
| $26K | ﹤0.01% |
700
-300
| -30% | -$11.9K |
|
|
HOUS
6600
CALL
DELISTED
Anywhere Real Estate
HOUS
| $26K | ﹤0.01% |
4,100
-15,800
| -79% | -$114K |
|
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.