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 | |
|---|---|---|---|---|---|---|
3151
Philips
PHG
$24.3B
| $801K | ﹤0.01% |
+34,389
| New | +$772K |
|
3152
CALL
RadNet
RDNT
$4.84B
| $801K | ﹤0.01% |
13,600
+2,400
| +21% | +$130K |
|
|
MASI
3153
DELISTED
Masimo
MASI
| $800K | ﹤0.01% |
6,360
+765
| +14% | +$101K |
|
3154
PUT
PagerDuty
PD
$753M
| $800K | ﹤0.01% |
34,900
-19,300
| -36% | -$402K |
|
3155
CALL
CenterPoint Energy
CNP
$28.8B
| $799K | ﹤0.01% |
25,800
+2,700
| +12% | +$79.7K |
|
|
HIMX
3156
PUT
Himax Technologies
HIMX
$2.22B
| $797K | ﹤0.01% |
100,400
+37,500
| +60% | +$229K |
|
3157
CALL
Revvity
RVTY
$12.1B
| $796K | ﹤0.01% |
+7,600
| New | +$807K |
|
3158
CALL
Apple Hospitality REIT
APLE
$3.98B
| $795K | ﹤0.01% |
54,700
+15,400
| +39% | +$230K |
|
3159
CALL
GoodRx Holdings
GDRX
$1.03B
| $795K | ﹤0.01% |
102,000
+6,200
| +6% | +$45.9K |
|
|
SWTX
3160
DELISTED
SpringWorks Therapeutics
SWTX
| $794K | ﹤0.01% |
21,093
-2,498
| -11% | -$105K |
|
3161
CALL
Acadia Pharmaceuticals
ACAD
$4.35B
| $793K | ﹤0.01% |
48,800
-111,400
| -70% | -$1.8M |
|
3162
PUT
Ardmore Shipping
ASC
$669M
| $793K | ﹤0.01% |
35,200
+25,800
| +274% | +$509K |
|
3163
Canadian National Railway
CNI
$78B
| $792K | ﹤0.01% |
6,709
+6,581
| +5,141% | +$824K |
|
3164
CALL
Evercore
EVR
$13.2B
| $792K | ﹤0.01% |
3,800
+2,100
| +124% | +$409K |
|
|
LKFT
3165
PUT
Lakefront Biotherapeutics American Depositary Shares
LKFT
$1.84B
| $792K | ﹤0.01% |
32,000
+26,400
| +471% | +$749K |
|
|
DVAX
3166
CALL
DELISTED
Dynavax Technologies
DVAX
| $791K | ﹤0.01% |
70,500
-600
| -0.8% | -$6.98K |
|
|
METD
3167
PUT
Direxion Daily META Bear 1X ETF
METD
$8.56M
| $790K | ﹤0.01% |
+10,800
| New | +$256K |
|
3168
CALL
Adecoagro
AGRO
$1.48B
| $789K | ﹤0.01% |
81,100
+79,500
| +4,969% | +$823K |
|
|
GOLD
3169
CALL
Gold.com Inc
GOLD
$1.19B
| $789K | ﹤0.01% |
24,400
+21,300
| +687% | +$785K |
|
3170
PUT
Omnicom Group
OMC
$23.5B
| $789K | ﹤0.01% |
8,800
-59,700
| -87% | -$5.54M |
|
3171
PUT
Gaotu Techedu
GOTU
$374M
| $786K | ﹤0.01% |
160,600
-195,300
| -55% | -$1.23M |
|
3172
CALL
Paysafe
PSFE
$440M
| $786K | ﹤0.01% |
44,500
+11,900
| +37% | +$198K |
|
3173
CALL
Perella Weinberg Partners
PWP
$1.18B
| $786K | ﹤0.01% |
48,400
+11,800
| +32% | +$178K |
|
3174
PUT
SBA Communications
SBAC
$18.3B
| $785K | ﹤0.01% |
4,000
-22,700
| -85% | -$4.49M |
|
3175
Wells Fargo
WFC
$264B
| $785K | ﹤0.01% |
+13,222
| New | +$781K |
|
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.