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 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3926
PUT
MakeMyTrip
MMYT
$5.36B
| $337K | ﹤0.01% |
11,000
+3,700
| +51% | +$114K |
|
3927
PUT
Meritage Homes
MTH
$4.58B
| $337K | ﹤0.01% |
9,600
-1,800
| -16% | -$72.8K |
|
|
PRVB
3928
CALL
DELISTED
Provention Bio, Inc. Common Stock
PRVB
| $337K | ﹤0.01% |
75,000
+35,500
| +90% | +$162K |
|
3929
CALL
MasTec
MTZ
$21.1B
| $336K | ﹤0.01% |
5,300
-24,300
| -82% | -$1.88M |
|
3930
iShares 0-1 Year Treasury Bond ETF
SHV
$20.8B
| $336K | ﹤0.01% |
+3,063
| New | +$337K |
|
3931
Sonos
SONO
$1.73B
| $336K | ﹤0.01% |
24,207
+19,835
| +454% | +$352K |
|
3932
CALL
Vishay Intertechnology
VSH
$5.25B
| $336K | ﹤0.01% |
18,900
-60,300
| -76% | -$1.18M |
|
|
SILV
3933
DELISTED
SilverCrest Metals Inc. Common Shares
SILV
| $336K | ﹤0.01% |
60,875
-35,453
| -37% | -$210K |
|
|
ESSC
3934
CALL
DELISTED
East Stone Acquisition Corporation Ordinary Shares
ESSC
| $336K | ﹤0.01% |
32,500
-102,100
| -76% | -$1.05M |
|
3935
Direxion Daily S&P 500 High Beta Bear 3X ETF
HIBS
$26M
| $335K | ﹤0.01% |
284
+53
| +23% | +$47.9K |
|
3936
Vroom Inc
VRM
$39M
| $335K | ﹤0.01% |
3,613
-1,200
| -25% | -$160K |
|
3937
PUT
XPEL
XPEL
$1.22B
| $335K | ﹤0.01% |
5,200
-100
| -2% | -$6.49K |
|
3938
PUT
Cooper-Standard Automotive
CPS
$523M
| $334K | ﹤0.01% |
57,200
+38,500
| +206% | +$272K |
|
3939
PUT
Sabesp
SBS
$19.1B
| $334K | ﹤0.01% |
189,244
-227,403
| -55% | -$385K |
|
|
WOW
3940
DELISTED
WideOpenWest
WOW
| $334K | ﹤0.01% |
27,296
-114,491
| -81% | -$2.04M |
|
|
SEEL
3941
CALL
DELISTED
Seelos Therapeutics, Inc. Common Stock
SEEL
| $334K | ﹤0.01% |
85
+16
| +23% | +$62.9K |
|
3942
CALL
Garrett Motion
GTX
$5.81B
| $333K | ﹤0.01% |
59,100
+21,700
| +58% | +$149K |
|
|
RWT
3943
PUT
Redwood Trust
RWT
$574M
| $333K | ﹤0.01% |
58,100
-12,600
| -18% | -$97.4K |
|
3944
PUT
Senseonics Holdings Inc
SENS
$263M
| $333K | ﹤0.01% |
12,645
-370
| -3% | -$11.3K |
|
|
WCC
3945
WESCO International
WCC
$16.7B
| $333K | ﹤0.01% |
+2,796
| New | +$350K |
|
3946
PUT
Arch Capital
ACGL
$34.3B
| $332K | ﹤0.01% |
7,300
+2,600
| +55% | +$117K |
|
|
WOW
3947
CALL
DELISTED
WideOpenWest
WOW
| $332K | ﹤0.01% |
27,100
-32,200
| -54% | -$574K |
|
|
AEVA
3948
PUT
Aeva Technologies
AEVA
$1.2B
| $331K | ﹤0.01% |
35,500
+31,380
| +762% | +$496K |
|
|
HIVE
3949
PUT
HIVE Digital Technologies
HIVE
$774M
| $331K | ﹤0.01% |
88,100
-2,600
| -3% | -$11.8K |
|
3950
PUT
Ultragenyx Pharmaceutical
RARE
$2.45B
| $331K | ﹤0.01% |
8,000
+7,700
| +2,567% | +$396K |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.