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 | |
|---|---|---|---|---|---|---|
3826
PUT
Trex
TREX
$4.57B
| $279K | ﹤0.01% |
6,600
-30,400
| -82% | -$1.38M |
|
3827
Westrock Coffee
WEST
$803M
| $279K | ﹤0.01% |
20,909
-3,469
| -14% | -$41.4K |
|
|
MGI
3828
CALL
DELISTED
MoneyGram International, Inc. New
MGI
| $279K | ﹤0.01% |
25,700
+9,100
| +55% | +$97.4K |
|
3829
American Resources Corp
AREC
$184M
| $278K | ﹤0.01% |
211,064
-93,853
| -31% | -$172K |
|
3830
PUT
Compañía de Minas Buenaventura
BVN
$7.72B
| $277K | ﹤0.01% |
37,200
+35,000
| +1,591% | +$259K |
|
3831
CALL
Exponent
EXPO
$3.15B
| $277K | ﹤0.01% |
2,800
+2,700
| +2,700% | +$262K |
|
3832
CALL
IMAX
IMAX
$2.59B
| $277K | ﹤0.01% |
18,900
-297,300
| -94% | -$4.34M |
|
3833
PUT
Prospect Capital
PSEC
$1.12B
| $277K | ﹤0.01% |
39,700
-11,500
| -22% | -$82.7K |
|
3834
CALL
Simply Good Foods
SMPL
$941M
| $277K | ﹤0.01% |
7,300
+1,500
| +26% | +$55.4K |
|
|
PDCO
3835
CALL
DELISTED
Patterson Companies, Inc.
PDCO
| $277K | ﹤0.01% |
9,900
-8,600
| -46% | -$237K |
|
|
AQUA
3836
PUT
DELISTED
Evoqua Water Technologies Corp. Common Stock
AQUA
| $277K | ﹤0.01% |
7,000
+3,900
| +126% | +$153K |
|
3837
CALL
Funko
FNKO
$355M
| $276K | ﹤0.01% |
25,300
-102,800
| -80% | -$1.44M |
|
3838
PUT
Lindsay Corp
LNN
$1.17B
| $276K | ﹤0.01% |
1,700
+1,300
| +325% | +$214K |
|
|
RENT
3839
CALL
Rent the Runway
RENT
$119M
| $276K | ﹤0.01% |
4,535
+2,745
| +153% | +$111K |
|
3840
PUT
Essential Utilities
WTRG
$11.5B
| $276K | ﹤0.01% |
5,800
+3,000
| +107% | +$136K |
|
|
MFGP
3841
PUT
DELISTED
Micro Focus International plc. American Depositary Shares, each representing One Ordinary Share
MFGP
| $276K | ﹤0.01% |
43,800
-7,900
| -15% | -$48K |
|
|
3842
Compañía de Minas Buenaventura
BVN
$7.72B
| $275K | ﹤0.01% |
37,016
+24,127
| +187% | +$179K |
|
3843
Babcock & Wilcox
BW
$1.31B
| $275K | ﹤0.01% |
+47,771
| New | +$261K |
|
3844
CALL
CGI
GIB
$15B
| $275K | ﹤0.01% |
3,200
+1,800
| +129% | +$148K |
|
|
SILK
3845
DELISTED
Silk Road Medical, Inc. Common Stock
SILK
| $275K | ﹤0.01% |
+5,214
| New | +$254K |
|
3846
Arhaus
ARHS
$1.12B
| $274K | ﹤0.01% |
+28,154
| New | +$246K |
|
3847
PUT
AeroVironment
AVAV
$7.91B
| $274K | ﹤0.01% |
3,200
-600
| -16% | -$51.3K |
|
3848
CALL
Pacira BioSciences
PCRX
$1.05B
| $274K | ﹤0.01% |
7,100
+3,400
| +92% | +$165K |
|
|
LHCG
3849
CALL
DELISTED
LHC Group LLC
LHCG
| $274K | ﹤0.01% |
1,700
| – | – |
|
3850
DoubleVerify
DV
$1.73B
| $273K | ﹤0.01% |
+12,449
| New | +$324K |
|
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.