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 | |
|---|---|---|---|---|---|---|
3526
CALL
Rayonier
RYN
$6.52B
| $570K | ﹤0.01% |
21,604
+20,722
| +2,349% | +$569K |
|
3527
CALL
Fulcrum Therapeutics
FULC
$249M
| $569K | ﹤0.01% |
91,800
-11,100
| -11% | -$84.1K |
|
3528
PUT
ADT
ADT
$5.24B
| $568K | ﹤0.01% |
74,800
+22,700
| +44% | +$157K |
|
3529
CALL
ITT
ITT
$17.7B
| $568K | ﹤0.01% |
4,400
-16,400
| -79% | -$2.15M |
|
3530
CALL
National CineMedia
NCMI
$362M
| $568K | ﹤0.01% |
129,500
-5,500
| -4% | -$26.5K |
|
3531
PUT
Nokia
NOK
$51.8B
| $568K | ﹤0.01% |
150,500
+11,900
| +9% | +$44K |
|
|
FFAI
3532
PUT
Faraday Future Intelligent Electric
FFAI
$13.1M
| $568K | ﹤0.01% |
+187
| New | +$437K |
|
|
BORR
3533
Borr Drilling
BORR
$1.27B
| $567K | ﹤0.01% |
88,018
+27,198
| +45% | +$164K |
|
3534
CALL
BlueLinx
BXC
$453M
| $567K | ﹤0.01% |
6,100
+1,800
| +42% | +$191K |
|
3535
CALL
Cogent Biosciences
COGT
$6.91B
| $567K | ﹤0.01% |
67,300
+16,300
| +32% | +$124K |
|
3536
Vanguard Mega Cap Growth ETF
MGK
$31.8B
| $567K | ﹤0.01% |
9,035
-5,520
| -38% | -$322K |
|
3537
CALL
Mohawk Industries
MHK
$7.05B
| $567K | ﹤0.01% |
5,000
-57,100
| -92% | -$6.64M |
|
3538
PUT
Sprout Social
SPT
$500M
| $567K | ﹤0.01% |
15,900
-5,300
| -25% | -$213K |
|
3539
PUT
Ormat Technologies
ORA
$6.28B
| $566K | ﹤0.01% |
7,900
-17,200
| -69% | -$1.19M |
|
3540
CALL
Black Stone Minerals
BSM
$3.17B
| $564K | ﹤0.01% |
36,000
-13,200
| -27% | -$211K |
|
3541
CALL
Mirum Pharmaceuticals
MIRM
$6.96B
| $564K | ﹤0.01% |
16,500
+11,700
| +244% | +$307K |
|
3542
CALL
Sibanye-Stillwater
SBSW
$6.05B
| $564K | ﹤0.01% |
129,800
+67,900
| +110% | +$336K |
|
3543
PUT
Ternium
TX
$9.37B
| $563K | ﹤0.01% |
15,000
+11,300
| +305% | +$467K |
|
|
LUCK
3544
CALL
Lucky Strike Entertainment
LUCK
$963M
| $563K | ﹤0.01% |
38,900
-62,500
| -62% | -$786K |
|
3545
CALL
SandRidge Energy
SD
$496M
| $561K | ﹤0.01% |
43,400
+14,900
| +52% | +$206K |
|
|
AL
3546
PUT
DELISTED
Air Lease Corp
AL
| $560K | ﹤0.01% |
11,800
+4,000
| +51% | +$194K |
|
3547
PUT
Loews
L
$24.4B
| $560K | ﹤0.01% |
7,500
-1,500
| -17% | -$114K |
|
3548
Sphere Entertainment
SPHR
$5.01B
| $560K | ﹤0.01% |
15,999
-21,931
| -58% | -$853K |
|
3549
PUT
Bitdeer Technologies
BTDR
$2.76B
| $559K | ﹤0.01% |
54,500
+25,500
| +88% | +$175K |
|
3550
CALL
Sabre
SABR
$704M
| $559K | ﹤0.01% |
209,700
-1,200
| -0.6% | -$3.36K |
|
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.