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 | |
|---|---|---|---|---|---|---|
351
PUT
Amgen
AMGN
$200B
| $33.1M | 0.04% |
147,000
-12,900
| -8% | -$3.13M |
|
352
CALL
Antero Resources
AR
$10.9B
| $32.8M | 0.04% |
1,073,000
-106,000
| -9% | -$3.91M |
|
353
PUT
Dick's Sporting Goods
DKS
$18.3B
| $32.5M | 0.04% |
310,800
+52,700
| +20% | +$5.36M |
|
354
PUT
Unity
U
$12.6B
| $32.5M | 0.04% |
1,019,600
+568,900
| +126% | +$23.4M |
|
355
PUT
Halliburton
HAL
$27.3B
| $32.3M | 0.04% |
1,313,700
+100,900
| +8% | +$2.89M |
|
356
CALL
Domino's
DPZ
$10.7B
| $32.2M | 0.04% |
103,900
+83,700
| +414% | +$31.8M |
|
357
CALL
EOG Resources
EOG
$77.5B
| $32.2M | 0.04% |
287,900
+101,700
| +55% | +$11.4M |
|
|
WBA
358
PUT
DELISTED
Walgreens Boots Alliance
WBA
| $32.1M | 0.04% |
1,022,400
+125,200
| +14% | +$4.64M |
|
|
SPLK
359
PUT
DELISTED
Splunk Inc
SPLK
| $32.1M | 0.04% |
426,500
-8,600
| -2% | -$843K |
|
|
BHVN
360
PUT
DELISTED
Biohaven Pharmaceutical Holding Company Ltd.
BHVN
| $32M | 0.04% |
212,000
+169,600
| +400% | +$25.1M |
|
361
PUT
Delta Air Lines
DAL
$53.9B
| $32M | 0.04% |
1,138,900
-732,300
| -39% | -$23.3M |
|
362
CALL
lululemon athletica
LULU
$12.6B
| $31.8M | 0.04% |
113,700
+12,900
| +13% | +$4M |
|
|
DOCU
363
CALL
DocuSign
DOCU
$8.98B
| $31.7M | 0.04% |
593,600
-35,800
| -6% | -$2.24M |
|
364
PUT
Honeywell
HON
$78B
| $31.7M | 0.04% |
201,484
-89,761
| -31% | -$15.6M |
|
365
CALL
Albemarle
ALB
$13.8B
| $31.6M | 0.04% |
119,600
+30,700
| +35% | +$7.81M |
|
366
PUT
Cameco
CCJ
$38.9B
| $31.6M | 0.04% |
1,190,400
+620,800
| +109% | +$15.9M |
|
367
PUT
Cleveland-Cliffs
CLF
$6.25B
| $31.5M | 0.04% |
2,340,400
+270,800
| +13% | +$4.51M |
|
368
PUT
The Mosaic Company
MOS
$7.08B
| $31.5M | 0.04% |
650,800
-248,800
| -28% | -$12.9M |
|
369
PUT
ProShares Ultra Bloomberg Natural Gas
BOIL
$423M
| $31.4M | 0.04% |
8,803
-4,187
| -32% | -$66.9M |
|
370
CALL
APA Corp
APA
$12.9B
| $31.4M | 0.04% |
917,300
+437,100
| +91% | +$15.6M |
|
|
371
CALL
Cameco
CCJ
$38.9B
| $31.3M | 0.04% |
1,179,100
-89,000
| -7% | -$2.28M |
|
|
PARA
372
PUT
DELISTED
Paramount Global Class B
PARA
| $31.1M | 0.04% |
1,634,300
-248,700
| -13% | -$5.97M |
|
373
PUT
Altria Group
MO
$120B
| $31.1M | 0.04% |
770,100
-246,100
| -24% | -$10.7M |
|
374
CALL
Lucid Motors
LCID
$2.52B
| $31M | 0.04% |
222,210
+53,770
| +32% | +$9.32M |
|
375
State Street SPDR S&P Regional Banking ETF
KRE
$4.82B
| $31M | 0.04% |
526,601
+482,899
| +1,105% | +$30.2M |
|
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.