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 | |
|---|---|---|---|---|---|---|
5976
PUT
Coherus Oncology
CHRS
$217M
| $46K | ﹤0.01% |
5,900
-34,700
| -85% | -$267K |
|
5977
Clover Health Investments
CLOV
$2.2B
| $46K | ﹤0.01% |
49,895
-138,721
| -74% | -$185K |
|
|
DADA
5978
PUT
DELISTED
Dada Nexus
DADA
| $46K | ﹤0.01% |
6,600
+1,000
| +18% | +$5.24K |
|
5979
PUT
Designer Brands
DBI
$307M
| $46K | ﹤0.01% |
4,800
-6,100
| -56% | -$82.3K |
|
5980
PUT
Focus Universal
FCUV
$8.15M
| $46K | ﹤0.01% |
27
-26
| -49% | -$67.4K |
|
5981
PIMCO 15+ Year US TIPS Index Exchange-Traded Fund
LTPZ
$690M
| $46K | ﹤0.01% |
+790
| New | +$46.3K |
|
5982
CALL
MidCap Financial Investment
MFIC
$787M
| $46K | ﹤0.01% |
4,100
-55,000
| -93% | -$633K |
|
5983
CALL
Nu Skin
NUS
$252M
| $46K | ﹤0.01% |
1,100
+800
| +267% | +$30.8K |
|
5984
PUT
Navigator Holdings
NVGS
$1.38B
| $46K | ﹤0.01% |
3,900
-9,800
| -72% | -$119K |
|
|
ORGN
5985
PUT
DELISTED
Origin Materials
ORGN
| $46K | ﹤0.01% |
333
+50
| +18% | +$7.96K |
|
5986
Regal Rexnord
RRX
$13.7B
| $46K | ﹤0.01% |
+386
| New | +$50.6K |
|
5987
PUT
Stellus Capital Investment Corp
SCM
$217M
| $46K | ﹤0.01% |
3,500
-800
| -19% | -$10.6K |
|
5988
PUT
Spero Therapeutics
SPRO
$67.7M
| $46K | ﹤0.01% |
26,900
+24,000
| +828% | +$44.8K |
|
5989
Vor Biopharma
VOR
$1.15B
| $46K | ﹤0.01% |
352
+180
| +105% | +$17.8K |
|
|
FAZE
5990
PUT
DELISTED
FaZe Holdings Inc. Common Stock
FAZE
| $46K | ﹤0.01% |
25,200
-13,200
| -34% | -$39.4K |
|
|
BORR
5991
CALL
Borr Drilling
BORR
$1.24B
| $45K | ﹤0.01% |
9,100
+4,700
| +107% | +$20.9K |
|
|
5992
Citigroup
C
$222B
| $45K | ﹤0.01% |
1,000
-1,383,414
| -100% | -$62.8M |
|
5993
CACI
CACI
$11B
| $45K | ﹤0.01% |
+151
| New | +$44K |
|
|
CISO
5994
PUT
CISO Global
CISO
$11.6M
| $45K | ﹤0.01% |
1,200
-407
| -25% | -$18.5K |
|
5995
CALL
Crescent Energy
CRGY
$3.79B
| $45K | ﹤0.01% |
3,800
+1,500
| +65% | +$20.6K |
|
|
CTO
5996
PUT
CTO Realty Growth
CTO
$824M
| $45K | ﹤0.01% |
+2,500
| New | +$48K |
|
5997
WisdomTree Europe SmallCap Dividend Fund
DFE
$166M
| $45K | ﹤0.01% |
+829
| New | +$42.8K |
|
5998
Deluxe
DLX
$1.18B
| $45K | ﹤0.01% |
2,671
-3,902
| -59% | -$69.4K |
|
5999
Destination XL Group
DXLG
$31.2M
| $45K | ﹤0.01% |
6,673
+2,362
| +55% | +$15.1K |
|
6000
PUT
Flowers Foods
FLO
$1.49B
| $45K | ﹤0.01% |
1,600
+1,200
| +300% | +$33.7K |
|
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.