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 | |
|---|---|---|---|---|---|---|
7651
Digi International
DGII
$2.52B
| $7K | ﹤0.01% |
+324
| New | +$8.69K |
|
7652
CALL
Dolby
DLB
$4.88B
| $7K | ﹤0.01% |
100
-800
| -89% | -$64.4K |
|
7653
CALL
Duluth Holdings
DLTH
$162M
| $7K | ﹤0.01% |
2,000
-120,100
| -98% | -$506K |
|
7654
CALL
Eagle Bancorp
EGBN
$860M
| $7K | ﹤0.01% |
400
-700
| -64% | -$13.6K |
|
7655
CALL
Empire State Realty Trust
ESRT
$971M
| $7K | ﹤0.01% |
800
-7,000
| -90% | -$65.3K |
|
7656
PUT
Entravision Communication
EVC
$993M
| $7K | ﹤0.01% |
+3,800
| New | +$7.87K |
|
7657
CALL
First Bancorp
FBP
$4.4B
| $7K | ﹤0.01% |
400
-500
| -56% | -$8.75K |
|
7658
Forum Energy Technologies
FET
$641M
| $7K | ﹤0.01% |
425
-2,267
| -84% | -$41.7K |
|
|
FSP
7659
PUT
Franklin Street Properties
FSP
$45M
| $7K | ﹤0.01% |
4,600
-1,300
| -22% | -$2.45K |
|
7660
CALL
Fortis
FTS
$29.6B
| $7K | ﹤0.01% |
+200
| New | +$7.89K |
|
7661
CALL
H.B. Fuller
FUL
$3.02B
| $7K | ﹤0.01% |
100
-400
| -80% | -$31.1K |
|
7662
PUT
Glacier Bancorp
GBCI
$6.44B
| $7K | ﹤0.01% |
200
-100
| -33% | -$3.72K |
|
7663
CALL
Genesco
GCO
$412M
| $7K | ﹤0.01% |
300
-600
| -67% | -$15.7K |
|
|
7664
PUT
Genesco
GCO
$412M
| $7K | ﹤0.01% |
300
-600
| -67% | -$15.7K |
|
7665
PUT
Gildan
GIL
$9.33B
| $7K | ﹤0.01% |
200
-300
| -60% | -$10.9K |
|
7666
CALL
Genmab
GMAB
$17.8B
| $7K | ﹤0.01% |
300
-1,100
| -79% | -$31.2K |
|
7667
PUT
Heritage Financial
HFWA
$1.23B
| $7K | ﹤0.01% |
+400
| New | +$7.18K |
|
7668
PUT
Haleon
HLN
$43.9B
| $7K | ﹤0.01% |
900
-10,600
| -92% | -$88.6K |
|
7669
Hamilton Lane
HLNE
$3.78B
| $7K | ﹤0.01% |
60
-513
| -90% | -$60K |
|
|
INZY
7670
PUT
DELISTED
Inozyme Pharma
INZY
| $7K | ﹤0.01% |
1,600
-8,500
| -84% | -$41.2K |
|
|
HYFT
7671
MindWalk Holdings
HYFT
$66.8M
| $7K | ﹤0.01% |
7,648
+6,644
| +662% | +$7.92K |
|
7672
Invesco KBW Premium Yield Equity REIT ETF
KBWY
$320M
| $7K | ﹤0.01% |
411
+71
| +21% | +$1.24K |
|
7673
Kite Realty
KRG
$5.99B
| $7K | ﹤0.01% |
323
-1,188
| -79% | -$25.3K |
|
7674
PUT
KULR Technology Group
KULR
$120M
| $7K | ﹤0.01% |
+2,350
| New | +$8.42K |
|
7675
Standard BioTools
LAB
$309M
| $7K | ﹤0.01% |
+4,019
| New | +$9.82K |
|
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.