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 | |
|---|---|---|---|---|---|---|
6851
CALL
Cabot Corp
CBT
$4.54B
| $20K | ﹤0.01% |
300
-400
| -57% | -$27.9K |
|
|
CRDL
6852
CALL
Cardiol Therapeutics
CRDL
$146M
| $20K | ﹤0.01% |
39,400
-97,900
| -71% | -$59.7K |
|
|
CRESY
6853
PUT
Cresud
CRESY
$795M
| $20K | ﹤0.01% |
3,123
-5,828
| -65% | -$31.2K |
|
6854
Dynagas LNG Partners
DLNG
$132M
| $20K | ﹤0.01% |
+7,655
| New | +$22K |
|
6855
CALL
Four Corners Property Trust
FCPT
$2.81B
| $20K | ﹤0.01% |
800
-200
| -20% | -$5.15K |
|
6856
CALL
Fortis
FTS
$29B
| $20K | ﹤0.01% |
500
-57,200
| -99% | -$2.24M |
|
6857
PUT
Cedar Fair
FUN
$1.77B
| $20K | ﹤0.01% |
500
| – | – |
|
6858
First Trust Technology AlphaDEX Fund
FXL
$2.53B
| $20K | ﹤0.01% |
+225
| New | +$20.8K |
|
6859
CALL
Gladstone Capital
GLAD
$422M
| $20K | ﹤0.01% |
1,050
-3,800
| -78% | -$72.9K |
|
6860
PUT
Goldman Sachs ActiveBeta International Equity ETF
GSIE
$6B
| $20K | ﹤0.01% |
300
| – | – |
|
6861
CALL
Health Catalyst
HCAT
$154M
| $20K | ﹤0.01% |
1,900
-700
| -27% | -$6.76K |
|
6862
Hydrofarm Holdings
HYFM
$2.57M
| $20K | ﹤0.01% |
1,325
+546
| +70% | +$12.5K |
|
6863
PUT
inTEST
INTT
$155M
| $20K | ﹤0.01% |
2,000
+700
| +54% | +$6.51K |
|
6864
CALL
Maravai LifeSciences
MRVI
$969M
| $20K | ﹤0.01% |
1,400
-9,600
| -87% | -$151K |
|
|
MTLS
6865
CALL
Materialise
MTLS
$368M
| $20K | ﹤0.01% |
2,300
-600
| -21% | -$5.94K |
|
|
NCTY
6866
CALL
The9 Ltd
NCTY
$68.1M
| $20K | ﹤0.01% |
3,700
-790
| -18% | -$5.96K |
|
6867
Navitas Semiconductor
NVTS
$2.84B
| $20K | ﹤0.01% |
5,744
-10,623
| -65% | -$45.5K |
|
|
OGI
6868
PUT
Organigram Holdings
OGI
$132M
| $20K | ﹤0.01% |
6,500
-2,000
| -24% | -$7.52K |
|
6869
CALL
Omnicell
OMCL
$1.61B
| $20K | ﹤0.01% |
400
-6,300
| -94% | -$378K |
|
6870
CALL
Open Text
OTEX
$6.15B
| $20K | ﹤0.01% |
700
-2,000
| -74% | -$56.7K |
|
6871
CALL
PROG Holdings
PRG
$1.75B
| $20K | ﹤0.01% |
1,200
-1,700
| -59% | -$29K |
|
6872
PUT
Protolabs
PRLB
$1.79B
| $20K | ﹤0.01% |
800
+700
| +700% | +$20.8K |
|
6873
iShares Global Consumer Discretionary ETF
RXI
$260M
| $20K | ﹤0.01% |
161
-60
| -27% | -$7.67K |
|
6874
PUT
Rackspace Technology
RXT
$1.05B
| $20K | ﹤0.01% |
7,000
-8,100
| -54% | -$34.2K |
|
6875
PUT
Sunstone Hotel Investors
SHO
$2.19B
| $20K | ﹤0.01% |
2,100
+200
| +11% | +$2.07K |
|
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.