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 | |
|---|---|---|---|---|---|---|
2776
PUT
The Greenbrier Companies
GBX
$1.59B
| $1.15M | ﹤0.01% |
23,300
+3,700
| +19% | +$192K |
|
2777
CVR Partners
UAN
$1.27B
| $1.15M | ﹤0.01% |
15,264
+12,645
| +483% | +$1.01M |
|
2778
CALL
Advanced Drainage Systems
WMS
$10.9B
| $1.15M | ﹤0.01% |
7,200
-8,000
| -53% | -$1.34M |
|
|
COOP
2779
CALL
DELISTED
Mr. Cooper
COOP
| $1.15M | ﹤0.01% |
14,200
-34,200
| -71% | -$2.75M |
|
2780
CALL
Ecopetrol
EC
$32.4B
| $1.15M | ﹤0.01% |
103,000
+81,900
| +388% | +$973K |
|
2781
CALL
Huazhu Hotels Group
HTHT
$12.9B
| $1.15M | ﹤0.01% |
34,600
+15,500
| +81% | +$585K |
|
2782
BILL Holdings
BILL
$4.52B
| $1.15M | ﹤0.01% |
21,866
-27,745
| -56% | -$1.57M |
|
2783
CALL
GDS Holdings
GDS
$6.27B
| $1.15M | ﹤0.01% |
123,400
+42,600
| +53% | +$344K |
|
2784
CALL
QuidelOrtho
QDEL
$1.18B
| $1.15M | ﹤0.01% |
34,500
+22,700
| +192% | +$929K |
|
2785
CALL
Republic Services
RSG
$67.4B
| $1.15M | ﹤0.01% |
5,900
-1,000
| -14% | -$189K |
|
2786
PUT
Agree Realty
ADC
$9.73B
| $1.15M | ﹤0.01% |
18,500
-13,000
| -41% | -$768K |
|
|
ENV
2787
CALL
DELISTED
ENVESTNET, INC.
ENV
| $1.15M | ﹤0.01% |
18,300
+16,000
| +696% | +$1.01M |
|
2788
PUT
Vulcan Materials
VMC
$36.9B
| $1.14M | ﹤0.01% |
4,600
-7,500
| -62% | -$1.94M |
|
2789
PUT
Liquidia Corp
LQDA
$7.71B
| $1.14M | ﹤0.01% |
95,200
-11,500
| -11% | -$153K |
|
2790
PUT
Blue Owl Capital
OBDC
$5.4B
| $1.14M | ﹤0.01% |
74,400
+50,600
| +213% | +$809K |
|
2791
CALL
Shutterstock
SSTK
$216M
| $1.14M | ﹤0.01% |
29,500
+10,700
| +57% | +$435K |
|
2792
CALL
Bio-Techne
TECH
$11.2B
| $1.14M | ﹤0.01% |
15,900
+1,300
| +9% | +$95.7K |
|
|
SPWR
2793
CALL
DELISTED
SunPower Corporation Common Stock
SPWR
| $1.14M | ﹤0.01% |
384,900
+8,100
| +2% | +$22.1K |
|
2794
CALL
Compass
COMP
$8.89B
| $1.14M | ﹤0.01% |
316,300
+23,500
| +8% | +$86.2K |
|
2795
PUT
Glaukos
GKOS
$8.9B
| $1.14M | ﹤0.01% |
9,600
+6,000
| +167% | +$637K |
|
2796
CALL
Lightspeed Commerce
LSPD
$1.35B
| $1.14M | ﹤0.01% |
83,000
-6,100
| -7% | -$85.4K |
|
2797
CALL
FB Financial Corp
FBK
$2.94B
| $1.14M | ﹤0.01% |
+29,100
| New | +$1.08M |
|
2798
State Street Real Estate Select Sector SPDR ETF
XLRE
$8.69B
| $1.13M | ﹤0.01% |
+29,490
| New | +$1.11M |
|
2799
Cadence Design Systems
CDNS
$93.8B
| $1.13M | ﹤0.01% |
+3,673
| New | +$1.09M |
|
2800
CALL
Service Corp International
SCI
$11.4B
| $1.13M | ﹤0.01% |
15,900
+800
| +5% | +$56.8K |
|
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.