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 | |
|---|---|---|---|---|---|---|
3951
CALL
Invesco Mortgage Capital
IVR
$769M
| $380K | ﹤0.01% |
40,600
-5,000
| -11% | -$45.1K |
|
3952
YieldMax NVDA Option Income Strategy ETF
NVDY
$1.34B
| $380K | ﹤0.01% |
+12,997
| New | +$357K |
|
3953
CALL
Tarsus Pharmaceuticals
TARS
$2.57B
| $380K | ﹤0.01% |
14,000
+8,600
| +159% | +$289K |
|
3954
CALL
Beam Therapeutics
BEAM
$2.7B
| $379K | ﹤0.01% |
16,200
-30,700
| -65% | -$754K |
|
3955
PUT
CubeSmart
CUBE
$9.62B
| $379K | ﹤0.01% |
8,400
-149,300
| -95% | -$6.44M |
|
3956
CALL
Cushman & Wakefield Ltd
CWK
$3.2B
| $379K | ﹤0.01% |
36,500
+27,500
| +306% | +$284K |
|
3957
CALL
HighPeak Energy
HPK
$811M
| $379K | ﹤0.01% |
27,000
-7,100
| -21% | -$105K |
|
3958
PUT
Kimco Realty
KIM
$17.7B
| $379K | ﹤0.01% |
19,500
+7,500
| +63% | +$140K |
|
3959
PUT
MasterCraft Boat Holdings
MCFT
$607M
| $379K | ﹤0.01% |
20,100
+5,600
| +39% | +$116K |
|
3960
Direxion Daily FTSE China Bear 3X ETF
YANG
$89M
| $379K | ﹤0.01% |
+2,173
| New | +$388K |
|
3961
PUT
F5
FFIV
$22.8B
| $378K | ﹤0.01% |
2,200
-3,500
| -61% | -$612K |
|
3962
CALL
RCI Hospitality Holdings
RICK
$203M
| $378K | ﹤0.01% |
8,700
-1,100
| -11% | -$53.3K |
|
3963
AudioEye
AEYE
$75.8M
| $377K | ﹤0.01% |
21,418
+16,665
| +351% | +$295K |
|
3964
PUT
Celanese
CE
$4.77B
| $377K | ﹤0.01% |
2,800
-16,700
| -86% | -$2.55M |
|
3965
CALL
Lincoln Electric
LECO
$14.6B
| $377K | ﹤0.01% |
2,000
-400
| -17% | -$86.8K |
|
3966
PUT
Rithm Capital
RITM
$5.46B
| $377K | ﹤0.01% |
34,600
-44,100
| -56% | -$488K |
|
|
MESO
3967
PUT
Mesoblast
MESO
$1.87B
| $376K | ﹤0.01% |
55,300
+36,500
| +194% | +$250K |
|
3968
PUT
DocGo
DCGO
$62.4M
| $375K | ﹤0.01% |
121,400
+107,500
| +773% | +$354K |
|
3969
CALL
Immunome
IMNM
$2.63B
| $375K | ﹤0.01% |
31,000
+28,700
| +1,248% | +$449K |
|
3970
CALL
Bread Financial
BFH
$4.36B
| $374K | ﹤0.01% |
8,400
-34,300
| -80% | -$1.35M |
|
3971
Eversource Energy
ES
$28.4B
| $374K | ﹤0.01% |
6,596
+965
| +17% | +$57.2K |
|
3972
Photronics
PLAB
$1.72B
| $374K | ﹤0.01% |
15,182
+11,815
| +351% | +$320K |
|
3973
CALL
SFL Corp
SFL
$1.61B
| $374K | ﹤0.01% |
27,000
-18,500
| -41% | -$250K |
|
3974
CALL
SiTime
SITM
$14.7B
| $373K | ﹤0.01% |
3,000
+2,900
| +2,900% | +$309K |
|
3975
PUT
Loar Holdings
LOAR
$6.7B
| $373K | ﹤0.01% |
+7,000
| New | +$379K |
|
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.