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 | |
|---|---|---|---|---|---|---|
3851
Remitly
RELY
$4.91B
| $273K | ﹤0.01% |
+23,852
| New | +$247K |
|
|
SVFAU
3852
CALL
DELISTED
SVF Investment Corp. Unit
SVFAU
| $273K | ﹤0.01% |
27,100
-12,600
| -32% | -$126K |
|
|
AL
3853
CALL
DELISTED
Air Lease Corp
AL
| $272K | ﹤0.01% |
7,100
-3,300
| -32% | -$119K |
|
3854
CALL
Cal-Maine
CALM
$4.42B
| $272K | ﹤0.01% |
5,000
-156,200
| -97% | -$9.03M |
|
3855
Murphy Oil
MUR
$5.25B
| $272K | ﹤0.01% |
6,327
+283
| +5% | +$12.8K |
|
3856
Alpha Metallurgical Resources
AMR
$1.84B
| $271K | ﹤0.01% |
1,853
-18,253
| -91% | -$2.88M |
|
|
CARM
3857
PUT
DELISTED
Carisma Therapeutics
CARM
| $271K | ﹤0.01% |
22,235
+10
| +0% | +$105 |
|
3858
PUT
Cavco Industries
CVCO
$4.54B
| $271K | ﹤0.01% |
+1,200
| New | +$267K |
|
3859
CALL
Puma Biotechnology
PBYI
$406M
| $271K | ﹤0.01% |
64,100
-62,200
| -49% | -$215K |
|
3860
Philips
PHG
$24.8B
| $271K | ﹤0.01% |
+21,129
| New | +$255K |
|
|
SJT
3861
PUT
San Juan Basin Royalty Trust
SJT
$117M
| $271K | ﹤0.01% |
23,800
-12,900
| -35% | -$142K |
|
|
HTGCR
3862
PUT
DELISTED
HERCULES TECHNOLOGY GROWTH CAP INC TRANS RGTS TO PUR COM STK
HTGCR
| $271K | ﹤0.01% |
20,500
+19,200
| +1,477% | +$254K |
|
3863
First Trust Dow Jones Internet Index Fund ETF
FDN
$5B
| $270K | ﹤0.01% |
+2,197
| New | +$279K |
|
3864
PUT
KB Financial Group
KB
$40.6B
| $270K | ﹤0.01% |
7,000
+5,800
| +483% | +$209K |
|
|
AMRN
3865
CALL
Amarin Corp
AMRN
$293M
| $269K | ﹤0.01% |
11,125
-275
| -2% | -$6.6K |
|
3866
CALL
First Bancorp
FBP
$4.47B
| $269K | ﹤0.01% |
+21,200
| New | +$309K |
|
3867
Sundial Growers
SNDL
$318M
| $269K | ﹤0.01% |
129,167
-22,930
| -15% | -$54.5K |
|
3868
CALL
Select Water Solutions
WTTR
$2.24B
| $269K | ﹤0.01% |
29,200
+13,300
| +84% | +$112K |
|
|
DAY
3869
CALL
DELISTED
Dayforce
DAY
| $269K | ﹤0.01% |
4,200
-3,700
| -47% | -$233K |
|
|
OSG
3870
Octave Specialty Group
OSG
$261M
| $268K | ﹤0.01% |
15,399
-82,455
| -84% | -$1.22M |
|
3871
Digital Turbine
APPS
$1.02B
| $268K | ﹤0.01% |
+17,590
| New | +$270K |
|
3872
CALL
W.R. Berkley
WRB
$28.3B
| $268K | ﹤0.01% |
5,550
-3,000
| -35% | -$145K |
|
3873
CALL
Photronics
PLAB
$1.72B
| $267K | ﹤0.01% |
15,900
-36,300
| -70% | -$619K |
|
3874
CALL
Cricut
CRCT
$987M
| $266K | ﹤0.01% |
28,700
+11,400
| +66% | +$105K |
|
3875
PUT
Natural Resource Partners
NRP
$1.32B
| $266K | ﹤0.01% |
4,900
-35,500
| -88% | -$1.55M |
|
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.