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 | |
|---|---|---|---|---|---|---|
2376
CALL
Array Technologies
ARRY
$818M
| $1.67M | ﹤0.01% |
162,800
-560,200
| -77% | -$7.11M |
|
2377
PUT
IQVIA
IQV
$34.7B
| $1.67M | ﹤0.01% |
7,900
-49,200
| -86% | -$11.2M |
|
|
BRSL
2378
CALL
Brightstar Lottery PLC
BRSL
$1.91B
| $1.67M | ﹤0.01% |
81,600
-403,700
| -83% | -$8.25M |
|
2379
NextDecade
NEXT
$1.85B
| $1.67M | ﹤0.01% |
210,310
+111,295
| +112% | +$767K |
|
2380
CALL
Raymond James Financial
RJF
$32.5B
| $1.67M | ﹤0.01% |
13,500
-21,900
| -62% | -$2.7M |
|
|
HBI
2381
CALL
DELISTED
Hanesbrands
HBI
| $1.67M | ﹤0.01% |
338,300
-400
| -0.1% | -$1.96K |
|
2382
CALL
Imperial Petroleum
IMPP
$215M
| $1.67M | ﹤0.01% |
429,800
+66,700
| +18% | +$247K |
|
2383
PUT
Consolidated Edison
ED
$41.6B
| $1.66M | ﹤0.01% |
18,600
+12,500
| +205% | +$1.16M |
|
2384
CALL
Upwork
UPWK
$1.09B
| $1.66M | ﹤0.01% |
154,700
-23,700
| -13% | -$269K |
|
|
AZEK
2385
PUT
DELISTED
The AZEK Co
AZEK
| $1.66M | ﹤0.01% |
39,400
+38,500
| +4,278% | +$1.78M |
|
2386
Xcel Energy
XEL
$51B
| $1.65M | ﹤0.01% |
30,986
+6,848
| +28% | +$373K |
|
2387
CALL
NiSource
NI
$22.4B
| $1.65M | ﹤0.01% |
57,400
+16,300
| +40% | +$460K |
|
2388
PUT
Velocity Financial
VEL
$683M
| $1.65M | ﹤0.01% |
+92,000
| New | +$1.62M |
|
2389
PUT
Texas Roadhouse
TXRH
$12.7B
| $1.65M | ﹤0.01% |
9,600
+1,800
| +23% | +$293K |
|
2390
CALL
InterDigital
IDCC
$6.68B
| $1.64M | ﹤0.01% |
14,100
-50,900
| -78% | -$5.44M |
|
2391
CALL
Nexstar Media Group
NXST
$5.6B
| $1.64M | ﹤0.01% |
9,900
-16,100
| -62% | -$2.62M |
|
2392
Camtek
CAMT
$6.9B
| $1.64M | ﹤0.01% |
+13,094
| New | +$1.25M |
|
2393
PUT
FTI Consulting
FCN
$4.82B
| $1.64M | ﹤0.01% |
7,600
-3,700
| -33% | -$791K |
|
2394
CALL
Zimmer Biomet
ZBH
$17.7B
| $1.64M | ﹤0.01% |
15,100
-18,200
| -55% | -$2.15M |
|
2395
CALL
ANI Pharmaceuticals
ANIP
$1.77B
| $1.64M | ﹤0.01% |
25,700
+3,100
| +14% | +$201K |
|
2396
PUT
ImmunityBio
IBRX
$7.44B
| $1.64M | ﹤0.01% |
258,900
-94,200
| -27% | -$621K |
|
2397
Rio Tinto
RIO
$148B
| $1.64M | ﹤0.01% |
24,810
-6,370
| -20% | -$434K |
|
|
SRCL
2398
CALL
DELISTED
Stericycle Inc
SRCL
| $1.63M | ﹤0.01% |
28,100
+1,100
| +4% | +$56.5K |
|
|
EH
2399
CALL
EHang Holdings
EH
$372M
| $1.63M | ﹤0.01% |
120,200
-23,100
| -16% | -$390K |
|
2400
CALL
Otis Worldwide
OTIS
$27.4B
| $1.63M | ﹤0.01% |
16,900
-28,100
| -62% | -$2.71M |
|
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.