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 | |
|---|---|---|---|---|---|---|
5676
CALL
Amprius Technologies
AMPX
$1.36B
| $74K | ﹤0.01% |
58,900
-21,400
| -27% | -$34.9K |
|
5677
CALL
America Movil
AMX
$76.1B
| $74K | ﹤0.01% |
4,400
-7,500
| -63% | -$138K |
|
5678
CALL
Arqit Quantum
ARQQ
$298M
| $74K | ﹤0.01% |
8,684
-4,340
| -33% | -$47K |
|
|
BLDP
5679
CALL
Ballard Power Systems
BLDP
$805M
| $74K | ﹤0.01% |
33,200
+6,300
| +23% | +$17.9K |
|
5680
CALL
Compass Minerals
CMP
$1.23B
| $74K | ﹤0.01% |
7,200
-2,100
| -23% | -$27.1K |
|
5681
CALL
Dragonfly Energy
DFLI
$15M
| $74K | ﹤0.01% |
980
+604
| +161% | +$46.8K |
|
5682
HUB Group
HUBG
$2.85B
| $74K | ﹤0.01% |
1,724
-4,508
| -72% | -$190K |
|
5683
iHeartMedia
IHRT
$543M
| $74K | ﹤0.01% |
67,943
+25,371
| +60% | +$39.5K |
|
5684
Kinsale Capital Group
KNSL
$8.12B
| $74K | ﹤0.01% |
+193
| New | +$78.4K |
|
5685
PUT
Mercer International
MERC
$42.3M
| $74K | ﹤0.01% |
8,700
-3,300
| -28% | -$31.8K |
|
|
MFA
5686
CALL
MFA Financial
MFA
$926M
| $74K | ﹤0.01% |
7,000
-6,100
| -47% | -$65.6K |
|
5687
CALL
Pennant Group
PNTG
$1.4B
| $74K | ﹤0.01% |
+3,200
| New | +$70.1K |
|
5688
Sagimet Biosciences
SGMT
$439M
| $74K | ﹤0.01% |
+21,834
| New | +$100K |
|
|
TPH
5689
PUT
DELISTED
Tri Pointe Homes
TPH
| $74K | ﹤0.01% |
2,000
-600
| -23% | -$22.6K |
|
5690
PUT
US Commodity Index
USCI
$369M
| $74K | ﹤0.01% |
1,200
+1,100
| +1,100% | +$68.5K |
|
|
AGR
5691
PUT
DELISTED
Avangrid, Inc.
AGR
| $74K | ﹤0.01% |
2,100
-600
| -22% | -$21.6K |
|
5692
CALL
Enact Holdings
ACT
$6.61B
| $73K | ﹤0.01% |
2,400
| – | – |
|
5693
CALL
AMC Global Media
AMCX
$492M
| $73K | ﹤0.01% |
7,600
-16,200
| -68% | -$214K |
|
5694
PUT
Alpha Pro Tech
APT
$50.4M
| $73K | ﹤0.01% |
13,300
-16,300
| -55% | -$90.9K |
|
5695
Enerpac Tool Group
EPAC
$1.83B
| $73K | ﹤0.01% |
+1,912
| New | +$70.9K |
|
5696
CALL
Jakks Pacific
JAKK
$301M
| $73K | ﹤0.01% |
4,100
-1,500
| -27% | -$29.6K |
|
5697
Direxion Daily MSCI Mexico Bull 3X ETF
MEXX
$19.7M
| $73K | ﹤0.01% |
4,252
+2,774
| +188% | +$76.3K |
|
|
MRCC
5698
PUT
DELISTED
Monroe Capital Corp
MRCC
| $73K | ﹤0.01% |
9,700
| – | – |
|
|
NGD
5699
PUT
DELISTED
New Gold Inc
NGD
| $73K | ﹤0.01% |
37,700
+16,100
| +75% | +$30.6K |
|
5700
CALL
National Grid
NGG
$80.4B
| $73K | ﹤0.01% |
1,380
-4,563
| -77% | -$275K |
|
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.