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 | |
|---|---|---|---|---|---|---|
6826
PUT
Paymentus
PAY
$4.29B
| $21K | ﹤0.01% |
2,700
-34,200
| -93% | -$335K |
|
6827
PUT
Payoneer
PAYO
$2.42B
| $21K | ﹤0.01% |
3,900
-5,600
| -59% | -$35.1K |
|
6828
Phunware
PHUN
$43.1M
| $21K | ﹤0.01% |
567
+486
| +600% | +$26.4K |
|
6829
Playboy Inc
PLBY
$128M
| $21K | ﹤0.01% |
7,729
-6,722
| -47% | -$24K |
|
6830
CarParts.com
PRTS
$43.7M
| $21K | ﹤0.01% |
+338
| New | +$17.7K |
|
6831
Quantum Computing Inc
QUBT
$1.83B
| $21K | ﹤0.01% |
14,510
-4,253
| -23% | -$8.64K |
|
6832
CALL
FreightCar America
RAIL
$261M
| $21K | ﹤0.01% |
6,600
-20,400
| -76% | -$76.4K |
|
|
RDUS
6833
PUT
DELISTED
Radius Recycling
RDUS
| $21K | ﹤0.01% |
700
-300
| -30% | -$9.27K |
|
6834
Redwire
RDW
$2.06B
| $21K | ﹤0.01% |
10,724
+2,969
| +38% | +$6.84K |
|
6835
SoundHound AI
SOUN
$2.67B
| $21K | ﹤0.01% |
+12,250
| New | +$25.5K |
|
6836
Spire Global
SPIR
$444M
| $21K | ﹤0.01% |
2,789
+1,386
| +99% | +$13.5K |
|
6837
Spire
SR
$4.72B
| $21K | ﹤0.01% |
+313
| New | +$21.3K |
|
6838
PUT
Televisa
TV
$1.48B
| $21K | ﹤0.01% |
4,700
+700
| +18% | +$3.63K |
|
6839
PUT
Titan International
TWI
$466M
| $21K | ﹤0.01% |
1,400
-1,000
| -42% | -$14.3K |
|
6840
PUT
VirnetX Holding Corp
VHC
$54.4M
| $21K | ﹤0.01% |
810
+710
| +710% | +$17.6K |
|
|
FNA
6841
CALL
DELISTED
Paragon 28, Inc.
FNA
| $21K | ﹤0.01% |
1,100
-400
| -27% | -$7.57K |
|
|
DMK
6842
CALL
DELISTED
DMK Pharmaceuticals Corporation Common Stock
DMK
| $21K | ﹤0.01% |
1,837
+28
| +2% | +$320 |
|
|
RUTH
6843
DELISTED
Ruth's Hospitality Group, Inc.
RUTH
| $21K | ﹤0.01% |
+1,420
| New | +$24.9K |
|
|
CO
6844
DELISTED
Global Cord Blood Corporation
CO
| $21K | ﹤0.01% |
7,338
+2,200
| +43% | +$6.3K |
|
6845
CALL
Alkami Technology
ALKT
$1.94B
| $20K | ﹤0.01% |
1,400
-13,100
| -90% | -$183K |
|
|
BDN
6846
PUT
Brandywine Realty Trust
BDN
$524M
| $20K | ﹤0.01% |
3,400
-2,000
| -37% | -$12.9K |
|
|
BHR
6847
CALL
Braemar Hotels & Resorts
BHR
$156M
| $20K | ﹤0.01% |
5,100
-200
| -4% | -$821 |
|
6848
Blink Charging
BLNK
$74.3M
| $20K | ﹤0.01% |
1,900
-20,813
| -92% | -$284K |
|
6849
PUT
Barnes & Noble Education
BNED
$431M
| $20K | ﹤0.01% |
119
-636
| -84% | -$152K |
|
6850
PUT
Bruker
BRKR
$9.57B
| $20K | ﹤0.01% |
+300
| New | +$19.1K |
|
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.