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 | |
|---|---|---|---|---|---|---|
1101
CALL
Kimbell Royalty Partners
KRP
$1.47B
| $5.77M | 0.01% |
339,800
+94,200
| +38% | +$1.61M |
|
1102
Zillow
Z
$7.04B
| $5.77M | 0.01% |
+201,603
| New | +$7M |
|
1103
PUT
Boston Scientific
BSX
$65.8B
| $5.74M | 0.01% |
148,300
-235,500
| -61% | -$9.45M |
|
1104
CALL
First Majestic Silver
AG
$8.05B
| $5.74M | 0.01% |
753,500
+206,000
| +38% | +$1.54M |
|
1105
PUT
ZIM Integrated Shipping Services
ZIM
$3B
| $5.74M | 0.01% |
244,100
-99,000
| -29% | -$4.09M |
|
|
EXAS
1106
CALL
DELISTED
Exact Sciences
EXAS
| $5.73M | 0.01% |
176,300
-4,900
| -3% | -$202K |
|
|
FITB
1107
CALL
Fifth Third Bancorp
FITB
$52B
| $5.72M | 0.01% |
178,900
+126,700
| +243% | +$4.37M |
|
1108
CALL
FuboTV Inc
FUBO
$245M
| $5.71M | 0.01% |
133,975
+86,750
| +184% | +$3.73M |
|
|
DFS
1109
PUT
DELISTED
Discover Financial Services
DFS
| $5.69M | 0.01% |
62,600
-300
| -0.5% | -$30.4K |
|
1110
CALL
iShares Convertible Bond ETF
ICVT
$7.23B
| $5.69M | 0.01% |
220,600
+126,200
| +134% | +$9.14M |
|
|
EDR
1111
CALL
DELISTED
Endeavor Group Holdings, Inc.
EDR
| $5.69M | 0.01% |
280,700
+265,000
| +1,688% | +$5.99M |
|
1112
PUT
Crocs
CROX
$6.69B
| $5.68M | 0.01% |
82,800
+22,800
| +38% | +$1.58M |
|
1113
PUT
Duolingo
DUOL
$5.7B
| $5.68M | 0.01% |
59,700
+13,400
| +29% | +$1.3M |
|
1114
PUT
Idexx Laboratories
IDXX
$42.9B
| $5.67M | 0.01% |
17,400
+13,300
| +324% | +$4.89M |
|
1115
CALL
MGM Resorts International
MGM
$11.7B
| $5.66M | 0.01% |
190,500
-131,700
| -41% | -$4.28M |
|
1116
CALL
Lumentum
LITE
$59.4B
| $5.65M | 0.01% |
82,400
-10,100
| -11% | -$837K |
|
1117
CALL
SiriusXM
SIRI
$10B
| $5.64M | 0.01% |
98,870
+80,440
| +436% | +$5.06M |
|
1118
PUT
Rockwell Automation
ROK
$51.4B
| $5.63M | 0.01% |
26,200
+7,200
| +38% | +$1.68M |
|
1119
CALL
Viatris
VTRS
$20.1B
| $5.63M | 0.01% |
661,400
+129,100
| +24% | +$1.27M |
|
1120
Invesco CurrencyShares Japanese Yen Trust
FXY
$423M
| $5.63M | 0.01% |
87,070
+80,871
| +1,305% | +$5.47M |
|
1121
CALL
Fidelity National Information Services
FIS
$21.5B
| $5.61M | 0.01% |
74,200
-117,700
| -61% | -$11M |
|
1122
PUT
Ally Financial
ALLY
$13.1B
| $5.6M | 0.01% |
201,400
+86,400
| +75% | +$2.87M |
|
1123
CALL
GlobalFoundries
GFS
$29.4B
| $5.6M | 0.01% |
115,800
+82,400
| +247% | +$4.44M |
|
1124
CALL
BioNTech
BNTX
$22.6B
| $5.6M | 0.01% |
41,500
+9,100
| +28% | +$1.39M |
|
1125
PUT
NetApp
NTAP
$32.9B
| $5.6M | 0.01% |
90,500
+24,400
| +37% | +$1.7M |
|
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.