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 | |
|---|---|---|---|---|---|---|
5626
Ginkgo Bioworks
DNA
$528M
| $78K | ﹤0.01% |
5,841
-3,710
| -39% | -$111K |
|
5627
PUT
Genco Shipping & Trading
GNK
$1.11B
| $78K | ﹤0.01% |
3,700
-55,400
| -94% | -$1.19M |
|
5628
Kornit Digital
KRNT
$705M
| $78K | ﹤0.01% |
5,375
+3,809
| +243% | +$58.8K |
|
|
ODP
5629
PUT
DELISTED
ODP
ODP
| $78K | ﹤0.01% |
2,000
+500
| +33% | +$22.3K |
|
5630
CALL
TETRA Technologies
TTI
$1.14B
| $78K | ﹤0.01% |
22,700
+9,500
| +72% | +$37.9K |
|
|
VMEO
5631
CALL
DELISTED
Vimeo
VMEO
| $78K | ﹤0.01% |
21,100
+19,700
| +1,407% | +$74.5K |
|
5632
Valvoline
VVV
$4.9B
| $78K | ﹤0.01% |
1,824
-17,470
| -91% | -$733K |
|
|
MORF
5633
DELISTED
Morphic Holding, Inc. Common Stock
MORF
| $78K | ﹤0.01% |
2,310
-1,090
| -32% | -$32.3K |
|
|
AHT
5634
CALL
Ashford Hospitality Trust
AHT
$20.9M
| $77K | ﹤0.01% |
8,000
+7,250
| +967% | +$87.1K |
|
|
AMRN
5635
CALL
Amarin Corp
AMRN
$298M
| $77K | ﹤0.01% |
5,630
-2,850
| -34% | -$49K |
|
5636
PUT
InfraCap MLP ETF
AMZA
$470M
| $77K | ﹤0.01% |
2,000
-3,100
| -61% | -$124K |
|
|
OPTU
5637
PUT
Optimum Communications Inc
OPTU
$298M
| $77K | ﹤0.01% |
38,000
-1,800
| -5% | -$4K |
|
5638
PUT
Clearfield
CLFD
$411M
| $77K | ﹤0.01% |
2,000
-11,700
| -85% | -$407K |
|
|
DRD
5639
CALL
DRDGold
DRD
$1.77B
| $77K | ﹤0.01% |
9,000
+8,600
| +2,150% | +$72.8K |
|
5640
PUT
DTE Energy
DTE
$29.5B
| $77K | ﹤0.01% |
700
-31,900
| -98% | -$3.57M |
|
5641
CALL
GrafTech
EAF
$175M
| $77K | ﹤0.01% |
7,980
+7,430
| +1,351% | +$114K |
|
5642
PUT
Erasca
ERAS
$6.3B
| $77K | ﹤0.01% |
+32,800
| New | +$70.8K |
|
|
LPRO
5643
CALL
Open Lending Corp
LPRO
| $77K | ﹤0.01% |
13,800
-2,300
| -14% | -$13.2K |
|
5644
Mohawk Industries
MHK
$7.5B
| $77K | ﹤0.01% |
683
-10,442
| -94% | -$1.21M |
|
|
MRSN
5645
DELISTED
Mersana Therapeutics
MRSN
| $77K | ﹤0.01% |
1,546
+1,224
| +380% | +$88.5K |
|
5646
CALL
Teledyne Technologies
TDY
$30.4B
| $77K | ﹤0.01% |
200
-3,900
| -95% | -$1.54M |
|
|
TMHC
5647
PUT
DELISTED
Taylor Morrison
TMHC
| $77K | ﹤0.01% |
+1,400
| New | +$80K |
|
5648
United Microelectronic
UMC
$47.7B
| $77K | ﹤0.01% |
+8,886
| New | +$73.3K |
|
5649
PUT
WPP
WPP
$4.36B
| $77K | ﹤0.01% |
1,700
-3,800
| -69% | -$189K |
|
5650
Wrap Technologies
WRAP
$103M
| $77K | ﹤0.01% |
+38,802
| New | +$67.4K |
|
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.