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 | |
|---|---|---|---|---|---|---|
3951
Sundial Growers
SNDL
$320M
| $331K | ﹤0.01% |
152,097
+106,023
| +230% | +$296K |
|
|
VTYX
3952
CALL
DELISTED
Ventyx Biosciences
VTYX
| $331K | ﹤0.01% |
+9,500
| New | +$210K |
|
3953
PUT
Xylem
XYL
$27.3B
| $331K | ﹤0.01% |
3,800
-2,500
| -40% | -$227K |
|
3954
CALL
American Resources Corp
AREC
$191M
| $330K | ﹤0.01% |
123,800
+52,900
| +75% | +$129K |
|
3955
CALL
Cemex
CX
$17.1B
| $330K | ﹤0.01% |
96,500
-19,000
| -16% | -$75.1K |
|
3956
PUT
Playboy Inc
PLBY
$128M
| $330K | ﹤0.01% |
81,900
-15,300
| -16% | -$82.2K |
|
|
PLL
3957
DELISTED
Piedmont Lithium
PLL
| $330K | ﹤0.01% |
6,178
+5,540
| +868% | +$285K |
|
|
LILM
3958
CALL
DELISTED
Lilium N.V. Class A Ordinary Shares
LILM
| $330K | ﹤0.01% |
144,900
+10,300
| +8% | +$25.8K |
|
|
HT
3959
CALL
DELISTED
Hersha Hospitality Trust Priority Class A Common Shares of Beneficial Interest
HT
| $330K | ﹤0.01% |
41,400
+3,100
| +8% | +$30.9K |
|
3960
AerCap
AER
$23.7B
| $329K | ﹤0.01% |
7,779
+3,302
| +74% | +$146K |
|
3961
AGCO
AGCO
$7.15B
| $329K | ﹤0.01% |
+3,430
| New | +$357K |
|
3962
CALL
Ardelyx
ARDX
$1.22B
| $329K | ﹤0.01% |
276,900
+129,400
| +88% | +$123K |
|
3963
PUT
Capricor Therapeutics
CAPR
$223M
| $329K | ﹤0.01% |
54,900
+7,000
| +15% | +$35.8K |
|
|
SEE
3964
PUT
DELISTED
Sealed Air
SEE
| $329K | ﹤0.01% |
7,400
+5,900
| +393% | +$324K |
|
|
BCLI
3965
CALL
DELISTED
BRAINSTORM CELL THERAPUTC
BCLI
| $328K | ﹤0.01% |
4,960
-853
| -15% | -$42.8K |
|
3966
State Street SPDR S&P China ETF
GXC
$462M
| $328K | ﹤0.01% |
4,637
+4,471
| +2,693% | +$366K |
|
3967
PUT
NOV
NOV
$6.93B
| $328K | ﹤0.01% |
20,300
-62,500
| -75% | -$1.05M |
|
|
BECN
3968
PUT
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $328K | ﹤0.01% |
6,000
+4,400
| +275% | +$249K |
|
3969
CALL
Brookfield
BN
$104B
| $327K | ﹤0.01% |
47,130
-25,606
| -35% | -$663K |
|
3970
CALL
Innoviva
INVA
$1.55B
| $327K | ﹤0.01% |
28,200
+22,900
| +432% | +$314K |
|
3971
PUT
Independence Realty Trust
IRT
$3.92B
| $327K | ﹤0.01% |
19,600
-9,700
| -33% | -$196K |
|
3972
US Global Jets ETF
JETS
$776M
| $327K | ﹤0.01% |
21,850
-4,628
| -17% | -$80.5K |
|
3973
PUT
ResMed
RMD
$30.6B
| $327K | ﹤0.01% |
1,500
+300
| +25% | +$68.3K |
|
3974
Tradr 2X Long Innovation ETFShort Innovation Daily ETF
SARK
$44.6M
| $327K | ﹤0.01% |
+1,764
| New | +$291K |
|
|
RETA
3975
DELISTED
Reata Pharmaceuticals, Inc. Class A Common Stock
RETA
| $327K | ﹤0.01% |
13,050
-858
| -6% | -$23.8K |
|
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.