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 | |
|---|---|---|---|---|---|---|
1126
CALL
Lincoln National
LNC
$7.81B
| $5.96M | 0.01% |
193,900
+121,000
| +166% | +$4.8M |
|
1127
PUT
SoFi Technologies
SOFI
$21.4B
| $5.94M | 0.01% |
1,287,800
-1,040,400
| -45% | -$5.16M |
|
|
FTCH
1128
CALL
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $5.93M | 0.01% |
1,254,600
+140,500
| +13% | +$979K |
|
1129
CALL
Guardant Health
GH
$19.9B
| $5.9M | 0.01% |
217,000
+143,600
| +196% | +$6.57M |
|
1130
CALL
Toll Brothers
TOL
$13.7B
| $5.89M | 0.01% |
118,000
+35,100
| +42% | +$1.61M |
|
1131
PUT
Darling Ingredients
DAR
$10.1B
| $5.88M | 0.01% |
94,000
-34,400
| -27% | -$2.43M |
|
1132
PUT
Live Nation Entertainment
LYV
$41B
| $5.86M | 0.01% |
84,000
+1,900
| +2% | +$141K |
|
|
SPWR
1133
PUT
DELISTED
SunPower Corporation Common Stock
SPWR
| $5.84M | 0.01% |
323,700
+99,400
| +44% | +$2.04M |
|
1134
Atlassian
TEAM
$20.3B
| $5.83M | 0.01% |
+45,339
| New | +$7.22M |
|
1135
CALL
Allegro MicroSystems
ALGM
$9.33B
| $5.83M | 0.01% |
194,300
+189,700
| +4,124% | +$5.17M |
|
|
SIX
1136
CALL
DELISTED
Six Flags Entertainment Corp.
SIX
| $5.81M | 0.01% |
249,800
-60,600
| -20% | -$1.3M |
|
1137
PUT
Synchrony
SYF
$23.3B
| $5.8M | 0.01% |
176,400
-43,300
| -20% | -$1.48M |
|
1138
CALL
Toast
TOST
$16.5B
| $5.76M | 0.01% |
319,700
+184,800
| +137% | +$3.47M |
|
1139
CALL
Invesco DB Commodity Index Tracking Fund
DBC
$1.74B
| $5.76M | 0.01% |
233,800
-111,400
| -32% | -$2.79M |
|
1140
PUT
Jabil
JBL
$33.7B
| $5.76M | 0.01% |
84,500
-8,600
| -9% | -$568K |
|
1141
PUT
Penske Automotive Group
PAG
$14.2B
| $5.74M | 0.01% |
49,900
-5,700
| -10% | -$650K |
|
|
GAP
1142
CALL
The Gap Inc
GAP
$6.8B
| $5.71M | 0.01% |
505,900
+63,200
| +14% | +$756K |
|
1143
CALL
Cintas
CTAS
$81.3B
| $5.69M | 0.01% |
50,400
-163,200
| -76% | -$17.7M |
|
1144
CALL
KE Holdings
BEKE
$17B
| $5.68M | 0.01% |
407,200
+150,800
| +59% | +$2.1M |
|
1145
CALL
Arbor Realty Trust
ABR
$966M
| $5.68M | 0.01% |
430,900
-120,100
| -22% | -$1.63M |
|
1146
State Street SPDR S&P Biotech ETF
XBI
$10.2B
| $5.67M | 0.01% |
68,331
-14,190
| -17% | -$1.15M |
|
1147
PUT
Baxter International
BAX
$11.2B
| $5.66M | 0.01% |
111,000
+47,100
| +74% | +$2.53M |
|
1148
PUT
T. Rowe Price
TROW
$24.6B
| $5.65M | 0.01% |
51,800
-74,700
| -59% | -$8.45M |
|
1149
CALL
Bunge Global
BG
$23.7B
| $5.65M | 0.01% |
56,600
-14,100
| -20% | -$1.35M |
|
1150
PUT
Aon
AON
$76B
| $5.64M | 0.01% |
18,800
+5,400
| +40% | +$1.58M |
|
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.