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 | |
|---|---|---|---|---|---|---|
4951
CALL
BioCardia
BCDA
$11.5M
| $109K | ﹤0.01% |
3,480
-647
| -16% | -$18.4K |
|
|
CVAC
4952
CALL
DELISTED
CureVac
CVAC
| $109K | ﹤0.01% |
18,100
+2,000
| +12% | +$14.8K |
|
4953
CALL
Evolution Petroleum
EPM
$133M
| $109K | ﹤0.01% |
14,500
-20,500
| -59% | -$154K |
|
4954
CALL
First American
FAF
$7.98B
| $109K | ﹤0.01% |
2,100
+900
| +75% | +$45.6K |
|
|
MAG
4955
PUT
DELISTED
MAG Silver
MAG
| $109K | ﹤0.01% |
7,000
-15,200
| -68% | -$221K |
|
4956
Murphy USA
MUSA
$11.4B
| $109K | ﹤0.01% |
391
-2,521
| -87% | -$731K |
|
4957
Direxion Daily S&P 500 Bear 1X ETF
SPDN
$226M
| $109K | ﹤0.01% |
+6,619
| New | +$110K |
|
|
SVC
4958
PUT
Service Properties Trust
SVC
$1.05B
| $109K | ﹤0.01% |
3,000
+520
| +21% | +$19.1K |
|
4959
PUT
Weave Communications
WEAV
$553M
| $109K | ﹤0.01% |
23,900
-12,500
| -34% | -$61.4K |
|
4960
CALL
Wolverine World Wide
WWW
$1.68B
| $109K | ﹤0.01% |
10,000
+6,300
| +170% | +$83.7K |
|
|
FSTX
4961
PUT
DELISTED
F-star Therapeutics, Inc. Common Stock
FSTX
| $109K | ﹤0.01% |
17,400
+9,300
| +115% | +$51.5K |
|
4962
CALL
Accel Entertainment
ACEL
$1B
| $108K | ﹤0.01% |
+14,100
| New | +$121K |
|
|
AMED
4963
CALL
DELISTED
Amedisys
AMED
| $108K | ﹤0.01% |
1,300
-10,000
| -88% | -$902K |
|
|
AMED
4964
DELISTED
Amedisys
AMED
| $108K | ﹤0.01% |
+1,296
| New | +$117K |
|
4965
CALL
American Vanguard Corp
AVD
$68.7M
| $108K | ﹤0.01% |
5,000
-26,600
| -84% | -$593K |
|
|
AVDX
4966
CALL
DELISTED
AvidXchange
AVDX
| $108K | ﹤0.01% |
10,900
+6,600
| +153% | +$57.3K |
|
4967
PUT
Century Aluminum
CENX
$4.22B
| $108K | ﹤0.01% |
13,300
-14,300
| -52% | -$108K |
|
4968
PUT
DarioHealth
DRIO
$69.2M
| $108K | ﹤0.01% |
1,270
+90
| +8% | +$8.1K |
|
4969
PUT
Eversource Energy
ES
$28.1B
| $108K | ﹤0.01% |
1,300
+200
| +18% | +$15.9K |
|
4970
PUT
Bank OZK
OZK
$5.63B
| $108K | ﹤0.01% |
2,700
-13,800
| -84% | -$592K |
|
4971
Planet Labs
PL
$6.94B
| $108K | ﹤0.01% |
+24,893
| New | +$129K |
|
4972
CALL
Perdoceo Education
PRDO
$2.17B
| $108K | ﹤0.01% |
7,800
+900
| +13% | +$11.5K |
|
4973
PUT
Ryder
R
$9.9B
| $108K | ﹤0.01% |
1,300
-43,900
| -97% | -$3.69M |
|
4974
PUT
ProShares UltraShort Industrials
SIJ
$6.11M
| $108K | ﹤0.01% |
950
-625
| -40% | -$41.2K |
|
|
SVM
4975
CALL
Silvercorp Metals
SVM
$2.02B
| $108K | ﹤0.01% |
36,800
+31,200
| +557% | +$84.5K |
|
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.