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 | |
|---|---|---|---|---|---|---|
2426
CALL
Intellia Therapeutics
NTLA
$1.5B
| $1.59M | ﹤0.01% |
71,100
+33,100
| +87% | +$788K |
|
2427
PUT
Sprott Junior Uranium Miners ETF
URNJ
$306M
| $1.58M | ﹤0.01% |
35,400
+5,100
| +17% | +$137K |
|
2428
PUT
WEC Energy
WEC
$37.7B
| $1.58M | ﹤0.01% |
20,200
-52,500
| -72% | -$4.26M |
|
|
ARCH
2429
PUT
DELISTED
Arch Resources, Inc.
ARCH
| $1.58M | ﹤0.01% |
10,400
+600
| +6% | +$96.4K |
|
2430
PUT
OneWater Marine
ONEW
$214M
| $1.58M | ﹤0.01% |
57,400
+30,600
| +114% | +$788K |
|
2431
PUT
Equitable Holdings
EQH
$13.1B
| $1.58M | ﹤0.01% |
38,700
+37,200
| +2,480% | +$1.46M |
|
2432
CALL
RB Global
RBA
$20.8B
| $1.58M | ﹤0.01% |
20,700
-9,400
| -31% | -$704K |
|
2433
PUT
TPG
TPG
$6.87B
| $1.58M | ﹤0.01% |
38,100
+22,300
| +141% | +$954K |
|
2434
AST SpaceMobile
ASTS
$16.8B
| $1.58M | ﹤0.01% |
136,001
+47,715
| +54% | +$249K |
|
2435
PUT
Elanco Animal Health
ELAN
$12.4B
| $1.58M | ﹤0.01% |
109,300
-82,500
| -43% | -$1.32M |
|
2436
CALL
Natural Resource Partners
NRP
$1.3B
| $1.58M | ﹤0.01% |
17,600
+4,600
| +35% | +$415K |
|
2437
PUT
Vanguard FTSE Europe ETF
VGK
$30B
| $1.57M | ﹤0.01% |
25,600
-53,900
| -68% | -$3.65M |
|
2438
PUT
Lightspeed Commerce
LSPD
$1.3B
| $1.57M | ﹤0.01% |
115,000
-19,200
| -14% | -$269K |
|
2439
CALL
Invesco Equal Weight 0-30 Year Treasury ETF
GOVI
$1.22B
| $1.57M | ﹤0.01% |
39,600
+16,200
| +69% | +$444K |
|
2440
CALL
CVR Partners
UAN
$1.3B
| $1.57M | ﹤0.01% |
20,800
-14,400
| -41% | -$1.15M |
|
|
CRON
2441
CALL
Cronos Group
CRON
$1.05B
| $1.57M | ﹤0.01% |
674,100
+189,000
| +39% | +$487K |
|
2442
Invesco Senior Loan ETF
BKLN
$7.1B
| $1.57M | ﹤0.01% |
74,517
-94,010
| -56% | -$1.99M |
|
2443
CALL
Frontdoor
FTDR
$5.02B
| $1.57M | ﹤0.01% |
46,400
+42,300
| +1,032% | +$1.43M |
|
2444
PUT
Beazer Homes USA
BZH
$907M
| $1.57M | ﹤0.01% |
57,000
+45,500
| +396% | +$1.29M |
|
2445
CALL
Melco Resorts & Entertainment
MLCO
$2.1B
| $1.56M | ﹤0.01% |
209,800
-501,200
| -70% | -$3.78M |
|
2446
PUT
Cinemark Holdings
CNK
$3.82B
| $1.56M | ﹤0.01% |
72,300
+24,400
| +51% | +$443K |
|
2447
CALL
AllianceBernstein
AB
$3.47B
| $1.56M | ﹤0.01% |
46,100
+19,000
| +70% | +$636K |
|
2448
Groupon
GRPN
$980M
| $1.56M | ﹤0.01% |
101,795
-40,253
| -28% | -$537K |
|
2449
CALL
Brink's
BCO
$5.02B
| $1.56M | ﹤0.01% |
15,200
-900
| -6% | -$85.8K |
|
2450
Tradeweb Markets
TW
$21.3B
| $1.56M | ﹤0.01% |
14,683
-3,398
| -19% | -$359K |
|
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.