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 | |
|---|---|---|---|---|---|---|
4676
PUT
Saia
SAIA
$9.27B
| $190K | ﹤0.01% |
1,000
+800
| +400% | +$170K |
|
4677
PUT
Visteon
VC
$2.79B
| $190K | ﹤0.01% |
+1,800
| New | +$215K |
|
4678
Vanguard Russell 2000 ETF
VTWO
$17.3B
| $190K | ﹤0.01% |
+2,862
| New | +$211K |
|
4679
CALL
WEX
WEX
$6.37B
| $190K | ﹤0.01% |
1,500
-700
| -32% | -$110K |
|
|
WSR
4680
DELISTED
Whitestone REIT
WSR
| $190K | ﹤0.01% |
22,467
+7,411
| +49% | +$76.1K |
|
4681
CALL
Essential Utilities
WTRG
$11.3B
| $190K | ﹤0.01% |
4,600
+3,400
| +283% | +$165K |
|
|
BLU
4682
PUT
DELISTED
BELLUS Health Inc.
BLU
| $190K | ﹤0.01% |
18,000
-8,000
| -31% | -$85K |
|
4683
CALL
Loews
L
$23.9B
| $189K | ﹤0.01% |
3,800
+400
| +12% | +$22.4K |
|
|
PLG
4684
CALL
Platinum Group Metals
PLG
$164M
| $189K | ﹤0.01% |
116,100
+5,600
| +5% | +$8.36K |
|
|
EVFM
4685
CALL
DELISTED
Evofem Biosciences, Inc. Common Stock
EVFM
| $189K | ﹤0.01% |
1,115,600
+148,500
| +15% | +$137K |
|
|
EGLE
4686
CALL
DELISTED
Eagle Bulk Shipping Inc.
EGLE
| $189K | ﹤0.01% |
4,400
+600
| +16% | +$28.4K |
|
|
AAWW
4687
DELISTED
Atlas Air Worldwide Holdings, Inc.
AAWW
| $189K | ﹤0.01% |
1,987
-1,869
| -48% | -$165K |
|
4688
ACI Worldwide
ACIW
$5.83B
| $188K | ﹤0.01% |
+9,024
| New | +$224K |
|
4689
CALL
Ardmore Shipping
ASC
$710M
| $188K | ﹤0.01% |
20,600
+12,000
| +140% | +$107K |
|
|
CARM
4690
PUT
DELISTED
Carisma Therapeutics
CARM
| $188K | ﹤0.01% |
22,225
+7,350
| +49% | +$100K |
|
4691
PUT
Essent Group
ESNT
$6.08B
| $188K | ﹤0.01% |
5,400
+4,100
| +315% | +$164K |
|
4692
PUT
Genesco
GCO
$425M
| $188K | ﹤0.01% |
4,800
+4,400
| +1,100% | +$235K |
|
4693
iShares US Healthcare Providers ETF
IHF
$1.21B
| $188K | ﹤0.01% |
+3,685
| New | +$200K |
|
4694
Vanguard S&P Mid-Cap 400 Growth ETF
IVOG
$1.62B
| $188K | ﹤0.01% |
2,390
+990
| +71% | +$85K |
|
4695
CALL
Lincoln Electric
LECO
$14.2B
| $188K | ﹤0.01% |
1,500
+200
| +15% | +$27K |
|
4696
CALL
Medpace
MEDP
$16.1B
| $188K | ﹤0.01% |
1,200
-14,300
| -92% | -$2.28M |
|
|
SRC
4697
PUT
DELISTED
SPIRIT REALTY CAPITAL, INC.
SRC
| $188K | ﹤0.01% |
5,200
+4,400
| +550% | +$182K |
|
|
ACLX
4698
PUT
DELISTED
Arcellx
ACLX
| $187K | ﹤0.01% |
+10,000
| New | +$191K |
|
4699
PUT
Broadridge
BR
$17.8B
| $187K | ﹤0.01% |
1,300
-1,600
| -55% | -$260K |
|
4700
PUT
Globant
GLOB
$1.58B
| $187K | ﹤0.01% |
1,000
-2,700
| -73% | -$557K |
|
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.