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 | |
|---|---|---|---|---|---|---|
4576
CALL
UroGen Pharma
URGN
$1.97B
| $218K | ﹤0.01% |
13,000
+2,200
| +20% | +$31.3K |
|
|
LGF.B
4577
CALL
DELISTED
Lions Gate Entertainment Corp. Class B Non-Voting Shares
LGF.B
| $218K | ﹤0.01% |
24,300
-22,600
| -48% | -$202K |
|
4578
PUT
Jasper Therapeutics
JSPR
$20M
| $217K | ﹤0.01% |
9,600
+2,600
| +37% | +$62.4K |
|
4579
PUT
Assurant
AIZ
$13.9B
| $216K | ﹤0.01% |
1,300
-1,000
| -43% | -$173K |
|
4580
iShares US Telecommunications ETF
IYZ
$1.16B
| $216K | ﹤0.01% |
+9,961
| New | +$211K |
|
4581
Vanguard Long-Term Treasury ETF
VGLT
$10.1B
| $216K | ﹤0.01% |
+3,755
| New | +$215K |
|
4582
Applied Industrial Technologies
AIT
$12.4B
| $215K | ﹤0.01% |
+1,112
| New | +$212K |
|
4583
CALL
Park Hotels & Resorts
PK
$3.08B
| $215K | ﹤0.01% |
14,400
-12,300
| -46% | -$197K |
|
4584
Direxion Daily MSCI Brazil Bull 2X ETF
BRZU
$98.6M
| $214K | ﹤0.01% |
+3,453
| New | +$260K |
|
4585
NOV
NOV
$6.84B
| $214K | ﹤0.01% |
11,301
-52,830
| -82% | -$990K |
|
4586
CALL
Establishment Labs
ESTA
$2.71B
| $213K | ﹤0.01% |
4,700
-19,000
| -80% | -$964K |
|
4587
PUT
StealthGas
GASS
$326M
| $213K | ﹤0.01% |
29,100
+27,000
| +1,286% | +$186K |
|
|
HITI
4588
CALL
High Tide
HITI
$180M
| $213K | ﹤0.01% |
96,400
+81,400
| +543% | +$190K |
|
4589
PUT
LivaNova
LIVN
$4.47B
| $213K | ﹤0.01% |
3,900
+3,200
| +457% | +$182K |
|
4590
PUT
Masco
MAS
$14.6B
| $213K | ﹤0.01% |
3,200
-18,300
| -85% | -$1.29M |
|
|
FISV
4591
Fiserv Inc
FISV
$29.7B
| $212K | ﹤0.01% |
+1,423
| New | +$215K |
|
4592
PUT
Pitney Bowes
PBI
$2.39B
| $212K | ﹤0.01% |
41,800
-20,600
| -33% | -$98.4K |
|
|
VRN
4593
DELISTED
Veren
VRN
| $212K | ﹤0.01% |
27,031
+13,190
| +95% | +$111K |
|
4594
Icon
ICLR
$13.7B
| $211K | ﹤0.01% |
+675
| New | +$212K |
|
4595
CALL
James River Group Holdings
JRVR
$219M
| $211K | ﹤0.01% |
27,400
+20,100
| +275% | +$165K |
|
|
JWN
4596
DELISTED
Nordstrom
JWN
| $211K | ﹤0.01% |
+9,981
| New | +$204K |
|
4597
CALL
Vir Biotechnology
VIR
$1.46B
| $211K | ﹤0.01% |
23,800
-27,400
| -54% | -$263K |
|
4598
Cerence
CRNC
$359M
| $210K | ﹤0.01% |
+74,530
| New | +$531K |
|
4599
CALL
Harrow
HROW
$1.44B
| $210K | ﹤0.01% |
10,100
-3,100
| -23% | -$46.3K |
|
|
ILPT
4600
CALL
Industrial Logistics Properties Trust
ILPT
$582M
| $210K | ﹤0.01% |
57,200
+34,100
| +148% | +$132K |
|
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.