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 | |
|---|---|---|---|---|---|---|
1426
CALL
Corpay
CPAY
$24.2B
| $3.72M | ﹤0.01% |
21,100
+17,700
| +521% | +$3.79M |
|
1427
PUT
CSX Corp
CSX
$98.6B
| $3.72M | ﹤0.01% |
139,500
-365,900
| -72% | -$11.4M |
|
1428
CALL
FMC
FMC
$1.42B
| $3.7M | ﹤0.01% |
35,000
+10,800
| +45% | +$1.17M |
|
|
VISN
1429
CALL
Vistance Networks Inc
VISN
$2.66B
| $3.69M | ﹤0.01% |
401,200
+178,600
| +80% | +$1.71M |
|
1430
CALL
US Foods
USFD
$21.4B
| $3.69M | ﹤0.01% |
139,700
+97,600
| +232% | +$3.03M |
|
1431
PUT
Brighthouse Financial
BHF
$3.63B
| $3.69M | ﹤0.01% |
84,900
+71,500
| +534% | +$3.26M |
|
1432
Roku
ROKU
$21.1B
| $3.68M | ﹤0.01% |
+65,309
| New | +$4.97M |
|
1433
PUT
American International
AIG
$41.9B
| $3.68M | ﹤0.01% |
77,500
+14,800
| +24% | +$777K |
|
1434
CALL
Clarus
CLAR
$125M
| $3.68M | ﹤0.01% |
273,100
+250,800
| +1,125% | +$4.88M |
|
|
COUP
1435
PUT
DELISTED
Coupa Software Incorporated
COUP
| $3.67M | ﹤0.01% |
62,500
-62,400
| -50% | -$4.09M |
|
1436
CALL
Doximity
DOCS
$3.67B
| $3.67M | ﹤0.01% |
121,600
+32,200
| +36% | +$1.18M |
|
1437
CALL
Stratasys
SSYS
$697M
| $3.67M | ﹤0.01% |
254,900
+153,500
| +151% | +$2.73M |
|
1438
CALL
argenx
ARGX
$57.4B
| $3.67M | ﹤0.01% |
10,400
-2,400
| -19% | -$889K |
|
1439
CALL
Amplify Online Retail ETF
IBUY
$106M
| $3.67M | ﹤0.01% |
198,900
+29,100
| +17% | +$1.35M |
|
1440
PUT
Array Technologies
ARRY
$818M
| $3.67M | ﹤0.01% |
221,200
+160,100
| +262% | +$2.77M |
|
1441
PUT
Matador Resources
MTDR
$6.31B
| $3.66M | ﹤0.01% |
74,800
-17,000
| -19% | -$918K |
|
1442
PUT
Sociedad Química y Minera de Chile
SQM
$19.6B
| $3.66M | ﹤0.01% |
40,300
+22,300
| +124% | +$2.16M |
|
1443
CALL
Innovative Industrial Properties
IIPR
$1.78B
| $3.65M | ﹤0.01% |
41,300
+300
| +0.7% | +$29.1K |
|
|
WCC
1444
PUT
WESCO International
WCC
$16.2B
| $3.65M | ﹤0.01% |
30,600
+1,700
| +6% | +$213K |
|
1445
PUT
Coupang
CPNG
$27.8B
| $3.64M | ﹤0.01% |
218,600
+54,400
| +33% | +$940K |
|
|
BHVN
1446
CALL
DELISTED
Biohaven Pharmaceutical Holding Company Ltd.
BHVN
| $3.64M | ﹤0.01% |
24,100
+14,300
| +146% | +$2.12M |
|
1447
PUT
Aflac
AFL
$63.9B
| $3.64M | ﹤0.01% |
64,800
+1,900
| +3% | +$112K |
|
1448
PUT
Equinix
EQIX
$107B
| $3.64M | ﹤0.01% |
6,400
+5,700
| +814% | +$3.72M |
|
|
GAP
1449
CALL
The Gap Inc
GAP
$6.84B
| $3.63M | ﹤0.01% |
442,700
-425,800
| -49% | -$4M |
|
1450
PUT
Canadian National Railway
CNI
$78.3B
| $3.63M | ﹤0.01% |
33,600
+10,600
| +46% | +$1.26M |
|
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.