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 | |
|---|---|---|---|---|---|---|
3726
CALL
East-West Bancorp
EWBC
$18B
| $475K | ﹤0.01% |
6,500
-28,000
| -81% | -$2.08M |
|
3727
CALL
Molina Healthcare
MOH
$10.5B
| $475K | ﹤0.01% |
1,600
-1,700
| -52% | -$577K |
|
3728
Patterson-UTI
PTEN
$3.48B
| $475K | ﹤0.01% |
+45,925
| New | +$504K |
|
3729
PUT
Primerica
PRI
$10B
| $473K | ﹤0.01% |
+2,000
| New | +$454K |
|
3730
PUT
RPM International
RPM
$14.3B
| $473K | ﹤0.01% |
4,400
+3,300
| +300% | +$365K |
|
3731
Revvity
RVTY
$12.4B
| $473K | ﹤0.01% |
4,519
-3,852
| -46% | -$409K |
|
3732
CALL
SiteOne Landscape Supply
SITE
$4.58B
| $473K | ﹤0.01% |
3,900
-800
| -17% | -$121K |
|
3733
PUT
Allegiant Air
ALGT
$2.73B
| $472K | ﹤0.01% |
9,400
-31,000
| -77% | -$1.74M |
|
3734
Evergy
EVRG
$19.8B
| $472K | ﹤0.01% |
8,929
+4,597
| +106% | +$245K |
|
3735
PUT
LKQ Corp
LKQ
$6.76B
| $469K | ﹤0.01% |
11,300
-61,600
| -84% | -$2.76M |
|
|
MTTR
3736
CALL
DELISTED
Matterport, Inc. Class A Common Stock
MTTR
| $469K | ﹤0.01% |
105,100
+52,800
| +101% | +$200K |
|
3737
HSBC
HSBC
$356B
| $468K | ﹤0.01% |
10,762
-22,392
| -68% | -$964K |
|
3738
CALL
DXC Technology
DXC
$1.76B
| $467K | ﹤0.01% |
24,500
-58,000
| -70% | -$1.09M |
|
|
AISP
3739
CALL
Airship AI Holdings
AISP
$66.8M
| $466K | ﹤0.01% |
+130,000
| New | +$763K |
|
3740
CALL
APi Group
APG
$17B
| $466K | ﹤0.01% |
+18,600
| New | +$467K |
|
3741
Community Health Systems
CYH
$395M
| $466K | ﹤0.01% |
138,716
-41,909
| -23% | -$141K |
|
3742
PUT
Portland General Electric
POR
$5.92B
| $466K | ﹤0.01% |
+10,800
| New | +$465K |
|
3743
Sunoco
SUN
$14.4B
| $466K | ﹤0.01% |
8,258
+6,233
| +308% | +$340K |
|
3744
Allison Transmission
ALSN
$10B
| $465K | ﹤0.01% |
6,139
+1,338
| +28% | +$103K |
|
3745
ChargePoint
CHPT
$138M
| $465K | ﹤0.01% |
15,418
+4,133
| +37% | +$135K |
|
3746
Clean Energy Fuels
CLNE
$421M
| $465K | ﹤0.01% |
174,197
+96,191
| +123% | +$248K |
|
3747
PUT
Carter's
CRI
$1.45B
| $464K | ﹤0.01% |
7,500
-11,500
| -61% | -$799K |
|
3748
PUT
Federal Realty Investment Trust
FRT
$10.9B
| $464K | ﹤0.01% |
4,600
+3,600
| +360% | +$363K |
|
3749
PUT
Sana Biotechnology
SANA
$916M
| $464K | ﹤0.01% |
85,100
+9,100
| +12% | +$72.5K |
|
3750
PUT
Integer Holdings
ITGR
$3.41B
| $463K | ﹤0.01% |
4,000
-7,100
| -64% | -$829K |
|
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.