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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1176
PUT
Elanco Animal Health
ELAN
$12.5B
| $5.41M | 0.01% |
443,000
-28,300
| -6% | -$353K |
|
1177
CALL
Starwood Property Trust
STWD
$6.11B
| $5.41M | 0.01% |
295,000
-49,300
| -14% | -$982K |
|
|
K
1178
CALL
DELISTED
Kellanova
K
| $5.4M | 0.01% |
80,727
-39,086
| -33% | -$2.65M |
|
1179
CALL
Nokia
NOK
$51.5B
| $5.39M | 0.01% |
1,161,600
-241,900
| -17% | -$1.12M |
|
1180
CALL
Pan American Silver
PAAS
$18.6B
| $5.39M | 0.01% |
329,800
+54,300
| +20% | +$869K |
|
1181
PUT
Manchester United
MANU
$3.89B
| $5.39M | 0.01% |
230,900
+208,100
| +913% | +$3.48M |
|
1182
CALL
Invesco Aerospace & Defense ETF
PPA
$8.29B
| $5.37M | 0.01% |
53,000
-72,300
| -58% | -$5.44M |
|
1183
PUT
Tencent Music
TME
$14.4B
| $5.37M | 0.01% |
648,700
+362,200
| +126% | +$2.04M |
|
1184
PUT
Johnson Controls International
JCI
$87.5B
| $5.36M | 0.01% |
83,800
+11,200
| +15% | +$685K |
|
1185
CALL
AES
AES
$10.6B
| $5.36M | 0.01% |
186,200
+84,500
| +83% | +$2.28M |
|
1186
PUT
Pultegroup
PHM
$24.2B
| $5.35M | 0.01% |
117,500
-1,100
| -0.9% | -$46.3K |
|
|
1187
PUT
Pan American Silver
PAAS
$18.6B
| $5.35M | 0.01% |
327,200
-16,900
| -5% | -$270K |
|
1188
PUT
NRG Energy
NRG
$30.1B
| $5.32M | 0.01% |
167,300
-61,700
| -27% | -$2.44M |
|
1189
CALL
Range Resources
RRC
$9.24B
| $5.31M | 0.01% |
212,200
-166,100
| -44% | -$4.55M |
|
1190
CALL
On Holding
ONON
$11.8B
| $5.3M | 0.01% |
308,800
+180,500
| +141% | +$3.16M |
|
1191
CALL
DigitalOcean
DOCN
$14.8B
| $5.28M | 0.01% |
207,400
+10,900
| +6% | +$341K |
|
1192
PUT
BJs Wholesale Club
BJ
$11.8B
| $5.28M | 0.01% |
79,800
+37,200
| +87% | +$2.69M |
|
1193
CALL
Helen of Troy
HELE
$636M
| $5.28M | 0.01% |
47,600
+47,000
| +7,833% | +$4.58M |
|
1194
PUT
US Bancorp Series B Preferred Stock
USB.PRH
$743M
| $5.27M | 0.01% |
120,900
-214,700
| -64% | -$4.02M |
|
1195
CALL
Ameriprise Financial
AMP
$45.4B
| $5.26M | 0.01% |
16,900
+14,000
| +483% | +$4.27M |
|
1196
CALL
Trump Media & Technology Group
DJT
$2.44B
| $5.26M | 0.01% |
350,700
+118,600
| +51% | +$2.32M |
|
1197
PUT
Wingstop
WING
$3.77B
| $5.23M | 0.01% |
38,000
+31,000
| +443% | +$4.57M |
|
1198
PUT
Coupang
CPNG
$28.1B
| $5.23M | 0.01% |
355,400
+136,800
| +63% | +$2.41M |
|
|
CYBR
1199
PUT
DELISTED
CyberArk
CYBR
| $5.22M | 0.01% |
40,300
-4,400
| -10% | -$636K |
|
1200
CALL
Under Armour Class C
UA
$2.85B
| $5.22M | 0.01% |
528,800
+141,900
| +37% | +$1.08M |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.