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 | |
|---|---|---|---|---|---|---|
|
CVGW
7701
PUT
DELISTED
Calavo Growers
CVGW
| $8K | ﹤0.01% |
300
+200
| +200% | +$6.7K |
|
7702
PUT
Duluth Holdings
DLTH
$152M
| $8K | ﹤0.01% |
1,400
-100
| -7% | -$750 |
|
7703
CALL
Viant Technology
DSP
$229M
| $8K | ﹤0.01% |
2,200
-300
| -12% | -$1.21K |
|
7704
CALL
Diana Shipping
DSX
$266M
| $8K | ﹤0.01% |
41,243
-3,259
| -7% | -$10.4K |
|
7705
GrafTech
EAF
$184M
| $8K | ﹤0.01% |
187
-1,211
| -87% | -$58.8K |
|
|
EB
7706
PUT
DELISTED
Eventbrite
EB
| $8K | ﹤0.01% |
1,400
+100
| +8% | +$654 |
|
7707
PUT
4D Molecular Therapeutics
FDMT
$502M
| $8K | ﹤0.01% |
+400
| New | +$6.18K |
|
|
KYNB
7708
Kyntra Bio
KYNB
$27.4M
| $8K | ﹤0.01% |
22
-339
| -94% | -$130K |
|
7709
PUT
1-800-Flowers.com
FLWS
$252M
| $8K | ﹤0.01% |
900
-57,000
| -98% | -$453K |
|
7710
PUT
FingerMotion
FNGR
$14.8M
| $8K | ﹤0.01% |
+2,900
| New | +$15.8K |
|
7711
Flotek Industries
FTK
$789M
| $8K | ﹤0.01% |
1,264
-1,388
| -52% | -$9.66K |
|
7712
PUT
American Express Global Business Travel
GBTG
$4.92B
| $8K | ﹤0.01% |
1,300
-100
| -7% | -$550 |
|
|
CBIO
7713
CALL
Crescent Biopharma
CBIO
$546M
| $8K | ﹤0.01% |
+27
| New | +$3.98K |
|
7714
CALL
FerroAtlántica
GSM
$590M
| $8K | ﹤0.01% |
2,100
-54,400
| -96% | -$271K |
|
|
HI
7715
PUT
DELISTED
Hillenbrand
HI
| $8K | ﹤0.01% |
+200
| New | +$8.85K |
|
7716
CALL
Hydrofarm Holdings
HYFM
$2.66M
| $8K | ﹤0.01% |
540
-2,330
| -81% | -$53.2K |
|
7717
PUT
iBio
IBIO
$67.6M
| $8K | ﹤0.01% |
940
+903
| +2,441% | +$30.6K |
|
7718
CALL
ICL Group
ICL
$6.58B
| $8K | ﹤0.01% |
1,100
-22,600
| -95% | -$187K |
|
7719
CALL
Immunic
IMUX
$178M
| $8K | ﹤0.01% |
600
-1,020
| -63% | -$27.8K |
|
7720
PUT
INmune Bio
INMB
$44.9M
| $8K | ﹤0.01% |
1,400
-4,300
| -75% | -$30.5K |
|
7721
CALL
LifeMD
LFMD
$176M
| $8K | ﹤0.01% |
4,600
+200
| +5% | +$448 |
|
|
7722
LifeMD
LFMD
$176M
| $8K | ﹤0.01% |
+4,460
| New | +$10K |
|
|
LGHL
7723
PUT
Lion Group Holding
LGHL
$997K
| – | – |
0
| – | – |
|
7724
M/I Homes
MHO
$3.95B
| $8K | ﹤0.01% |
190
-471
| -71% | -$20.2K |
|
7725
CALL
MarketWise
MKTW
$54.6M
| $8K | ﹤0.01% |
250
-525
| -68% | -$22.8K |
|
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.