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 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2101
iShares S&P 500 Growth ETF
IVW
$72.5B
| $2.22M | ﹤0.01% |
23,955
+3,363
| +16% | +$290K |
|
2102
Ventas
VTR
$48.9B
| $2.22M | ﹤0.01% |
43,249
-15,241
| -26% | -$714K |
|
2103
PUT
Pool Corp
POOL
$6.7B
| $2.21M | ﹤0.01% |
7,200
-27,100
| -79% | -$9.81M |
|
|
ITCI
2104
CALL
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $2.21M | ﹤0.01% |
32,200
-85,900
| -73% | -$5.96M |
|
2105
PUT
Goodyear
GT
$2.07B
| $2.2M | ﹤0.01% |
194,200
-102,900
| -35% | -$1.26M |
|
2106
PUT
EPR Properties
EPR
$4.86B
| $2.2M | ﹤0.01% |
52,500
-19,000
| -27% | -$782K |
|
2107
PUT
Vanguard Consumer Discretionary ETF
VCR
$5.84B
| $2.2M | ﹤0.01% |
3,900
-25,300
| -87% | -$7.75M |
|
2108
Cameco
CCJ
$38.3B
| $2.2M | ﹤0.01% |
+44,764
| New | +$2.27M |
|
2109
PUT
InterDigital
IDCC
$6.68B
| $2.2M | ﹤0.01% |
18,900
-59,200
| -76% | -$6.33M |
|
2110
WillScot Mobile Mini Holdings
WSC
$4.8B
| $2.2M | ﹤0.01% |
+58,496
| New | +$2.31M |
|
|
DFS
2111
DELISTED
Discover Financial Services
DFS
| $2.2M | ﹤0.01% |
+16,813
| New | +$2.1M |
|
2112
MACOM Technology Solutions
MTSI
$20.4B
| $2.2M | ﹤0.01% |
19,723
+16,827
| +581% | +$1.72M |
|
|
DFS
2113
CALL
DELISTED
Discover Financial Services
DFS
| $2.2M | ﹤0.01% |
16,800
-73,500
| -81% | -$9.16M |
|
2114
PUT
MSC Industrial Direct
MSM
$7.02B
| $2.19M | ﹤0.01% |
27,600
+12,900
| +88% | +$1.15M |
|
|
DO
2115
DELISTED
Diamond Offshore Drilling, Inc.
DO
| $2.18M | ﹤0.01% |
140,983
+81,355
| +136% | +$1.16M |
|
2116
CALL
nCino
NCNO
$1.81B
| $2.18M | ﹤0.01% |
69,200
-26,300
| -28% | -$822K |
|
2117
CALL
Rithm Capital
RITM
$5.09B
| $2.17M | ﹤0.01% |
199,300
+145,200
| +268% | +$1.61M |
|
2118
CALL
Fortuna Silver Mines
FSM
$2.59B
| $2.17M | ﹤0.01% |
444,400
+348,300
| +362% | +$1.76M |
|
2119
CALL
Academy Sports + Outdoors
ASO
$2.89B
| $2.17M | ﹤0.01% |
40,800
-13,000
| -24% | -$739K |
|
2120
PUT
ZTO Express
ZTO
$18.2B
| $2.17M | ﹤0.01% |
104,700
-65,400
| -38% | -$1.43M |
|
2121
CALL
Verra Mobility
VRRM
$615M
| $2.17M | ﹤0.01% |
79,700
+20,500
| +35% | +$529K |
|
|
GRMN
2122
PUT
Garmin
GRMN
$46.9B
| $2.17M | ﹤0.01% |
13,300
-32,400
| -71% | -$5.1M |
|
2123
CALL
Weibo
WB
$1.9B
| $2.16M | ﹤0.01% |
281,300
+186,100
| +195% | +$1.62M |
|
2124
CALL
Xerox
XRX
$337M
| $2.16M | ﹤0.01% |
185,900
-96,900
| -34% | -$1.41M |
|
2125
PUT
Sibanye-Stillwater
SBSW
$5.92B
| $2.16M | ﹤0.01% |
495,900
+214,300
| +76% | +$1.06M |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.