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 | |
|---|---|---|---|---|---|---|
6801
PUT
Kite Realty
KRG
$5.86B
| $22K | ﹤0.01% |
1,000
-900
| -47% | -$19.2K |
|
6802
PUT
Liberty Energy
LBRT
$2.79B
| $22K | ﹤0.01% |
1,100
-2,900
| -73% | -$64.7K |
|
6803
Lifecore Biomedical
LFCR
$162M
| $22K | ﹤0.01% |
4,363
+1,250
| +40% | +$7.4K |
|
6804
CALL
MGP Ingredients
MGPI
$404M
| $22K | ﹤0.01% |
300
-3,500
| -92% | -$273K |
|
6805
PUT
Motorcar Parts of America
MPAA
$266M
| $22K | ﹤0.01% |
+3,600
| New | +$20.7K |
|
6806
Madison Square Garden
MSGE
$3.59B
| $22K | ﹤0.01% |
+664
| New | +$24.5K |
|
6807
CALL
PCB Bancorp
PCB
$394M
| $22K | ﹤0.01% |
1,400
+900
| +180% | +$13.8K |
|
6808
CALL
Phillips Edison & Co
PECO
$5.5B
| $22K | ﹤0.01% |
+700
| New | +$22.8K |
|
|
6809
Phillips Edison & Co
PECO
$5.5B
| $22K | ﹤0.01% |
690
-1,930
| -74% | -$62.9K |
|
6810
PROG Holdings
PRG
$1.71B
| $22K | ﹤0.01% |
652
-62
| -9% | -$2.15K |
|
|
PSTL
6811
PUT
Postal Realty Trust
PSTL
$703M
| $22K | ﹤0.01% |
1,700
+800
| +89% | +$10.9K |
|
6812
PUT
Resources Connection
RGP
$140M
| $22K | ﹤0.01% |
2,000
-4,800
| -71% | -$54K |
|
6813
PUT
Rigel Pharmaceuticals
RIGL
$723M
| $22K | ﹤0.01% |
+2,700
| New | +$28.3K |
|
6814
Sprott Junior Gold Miners ETF
SGDJ
$268M
| $22K | ﹤0.01% |
731
+112
| +18% | +$3.7K |
|
6815
CALL
Sotera Health
SHC
$5B
| $22K | ﹤0.01% |
1,900
-800
| -30% | -$9.13K |
|
6816
Shenandoah Telecom
SHEN
$678M
| $22K | ﹤0.01% |
1,392
+344
| +33% | +$5.54K |
|
|
SLI
6817
Standard Lithium
SLI
$475M
| $22K | ﹤0.01% |
+17,845
| New | +$24.8K |
|
6818
PUT
Suzano
SUZ
$10.2B
| $22K | ﹤0.01% |
2,200
+1,500
| +214% | +$15.8K |
|
6819
Savers
SVV
$1.53B
| $22K | ﹤0.01% |
1,876
+752
| +67% | +$11.2K |
|
6820
BlackRock TCP Capital
TCPC
$278M
| $22K | ﹤0.01% |
2,041
+1,596
| +359% | +$16.9K |
|
|
TGB
6821
Trekor Metals
TGB
$2.45B
| $22K | ﹤0.01% |
9,379
+3,567
| +61% | +$9.05K |
|
6822
PUT
Transportadora de Gas del Sur
TGS
$4.48B
| $22K | ﹤0.01% |
+1,200
| New | +$21.5K |
|
6823
Vanguard Morningstar Mid-Cap Value ETF
VOE
$23.9B
| $22K | ﹤0.01% |
+149
| New | +$22.6K |
|
|
VRE
6824
DELISTED
Veris Residential
VRE
| $22K | ﹤0.01% |
+1,493
| New | +$22.3K |
|
6825
CALL
Ziff Davis
ZD
$2B
| $22K | ﹤0.01% |
400
+200
| +100% | +$11K |
|
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.