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 | |
|---|---|---|---|---|---|---|
1126
lululemon athletica
LULU
$13B
| $5.59M | 0.01% |
20,010
+15,638
| +358% | +$4.85M |
|
1127
PUT
Nasdaq
NDAQ
$52.1B
| $5.59M | 0.01% |
98,600
+56,300
| +133% | +$3.31M |
|
1128
PUT
Zoetis
ZTS
$31.6B
| $5.58M | 0.01% |
37,600
-3,700
| -9% | -$618K |
|
1129
PUT
L3Harris
LHX
$55.9B
| $5.57M | 0.01% |
26,800
+11,000
| +70% | +$2.54M |
|
1130
PUT
MPLX
MPLX
$59.5B
| $5.55M | 0.01% |
185,100
+100,200
| +118% | +$3.15M |
|
1131
PUT
JB Hunt Transport Services
JBHT
$27.1B
| $5.55M | 0.01% |
35,500
+21,900
| +161% | +$3.82M |
|
1132
PUT
Synopsys
SNPS
$71.5B
| $5.53M | 0.01% |
18,100
+12,600
| +229% | +$4.27M |
|
1133
PUT
BioMarin Pharmaceuticals
BMRN
$11.5B
| $5.51M | 0.01% |
65,000
+9,000
| +16% | +$801K |
|
1134
CALL
Diageo
DEO
$46.2B
| $5.5M | 0.01% |
32,400
+6,200
| +24% | +$1.11M |
|
1135
AbbVie
ABBV
$458B
| $5.5M | 0.01% |
+40,958
| New | +$5.88M |
|
|
SIX
1136
CALL
DELISTED
Six Flags Entertainment Corp.
SIX
| $5.49M | 0.01% |
310,400
+168,700
| +119% | +$3.81M |
|
1137
CALL
Microchip Technology
MCHP
$42.8B
| $5.49M | 0.01% |
90,000
-71,400
| -44% | -$4.69M |
|
1138
CALL
Baxter International
BAX
$11.6B
| $5.49M | 0.01% |
101,900
+76,400
| +300% | +$4.6M |
|
1139
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$45.8B
| $5.48M | 0.01% |
19,083
+19,081
| +954,050% | +$6.07M |
|
1140
CALL
Floor & Decor
FND
$5.81B
| $5.48M | 0.01% |
78,000
+53,000
| +212% | +$4.25M |
|
1141
Datadog
DDOG
$87.9B
| $5.48M | 0.01% |
61,713
-33,861
| -35% | -$3.41M |
|
1142
CALL
Quanta Services
PWR
$93.9B
| $5.48M | 0.01% |
43,000
+23,500
| +121% | +$3.21M |
|
1143
PUT
Penske Automotive Group
PAG
$14.3B
| $5.47M | 0.01% |
55,600
+50,700
| +1,035% | +$5.66M |
|
1144
PUT
Pan American Silver
PAAS
$18.6B
| $5.46M | 0.01% |
344,100
+63,200
| +22% | +$1.1M |
|
1145
PUT
Raymond James Financial
RJF
$32.5B
| $5.45M | 0.01% |
55,200
-19,300
| -26% | -$1.95M |
|
|
CANO
1146
CALL
DELISTED
Cano Health, Inc.
CANO
| $5.43M | 0.01% |
6,261
+3,557
| +132% | +$2.23M |
|
1147
CALL
F5
FFIV
$22.1B
| $5.43M | 0.01% |
37,500
+31,500
| +525% | +$4.99M |
|
1148
Vale
VALE
$62.9B
| $5.41M | 0.01% |
406,401
+74,307
| +22% | +$978K |
|
1149
CALL
Southern Copper
SCCO
$141B
| $5.41M | 0.01% |
130,201
+95,359
| +274% | +$4.22M |
|
1150
PUT
Jabil
JBL
$32.8B
| $5.37M | 0.01% |
93,100
+60,100
| +182% | +$3.5M |
|
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.