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 | |
|---|---|---|---|---|---|---|
5726
PUT
Gossamer Bio
GOSS
$82.9M
| $71K | ﹤0.01% |
79,800
+22,300
| +39% | +$16.7K |
|
5727
PUT
Penumbra
PEN
$12.7B
| $71K | ﹤0.01% |
400
-12,000
| -97% | -$2.4M |
|
5728
Invesco Aerospace & Defense ETF
PPA
$8.24B
| $71K | ﹤0.01% |
700
+243
| +53% | +$24.9K |
|
5729
Ring Energy
REI
$315M
| $71K | ﹤0.01% |
42,051
-53,147
| -56% | -$97.7K |
|
5730
CALL
abrdn Physical Gold Shares ETF
SGOL
$6.91B
| $71K | ﹤0.01% |
3,200
-5,700
| -64% | -$127K |
|
5731
PUT
Workhorse Group
WKHS
$33.2M
| $71K | ﹤0.01% |
304
+275
| +948% | +$144K |
|
|
ADVM
5732
CALL
DELISTED
Adverum Biotechnologies
ADVM
| $70K | ﹤0.01% |
10,300
-5,200
| -34% | -$48.4K |
|
5733
GoPro
GPRO
$130M
| $70K | ﹤0.01% |
49,757
-18,689
| -27% | -$31.2K |
|
5734
CALL
NewtekOne
NEWT
$428M
| $70K | ﹤0.01% |
5,600
+1,000
| +22% | +$12.3K |
|
5735
PUT
Nurix Therapeutics
NRIX
$2.41B
| $70K | ﹤0.01% |
3,400
+3,300
| +3,300% | +$51.4K |
|
|
ADAM
5736
PUT
Adamas Trust
ADAM
$815M
| $70K | ﹤0.01% |
12,000
+2,900
| +32% | +$18.6K |
|
5737
PUT
Pacific Biosciences
PACB
$435M
| $70K | ﹤0.01% |
51,700
-112,800
| -69% | -$228K |
|
5738
Radiant Logistics
RLGT
$386M
| $70K | ﹤0.01% |
12,311
+6,623
| +116% | +$34.5K |
|
5739
PUT
Saic
SAIC
$4.95B
| $70K | ﹤0.01% |
600
-2,400
| -80% | -$304K |
|
5740
Sinclair Inc
SBGI
$992M
| $70K | ﹤0.01% |
5,320
+5,115
| +2,495% | +$65.4K |
|
5741
SandRidge Energy
SD
$514M
| $70K | ﹤0.01% |
5,455
-5,246
| -49% | -$72.6K |
|
5742
CALL
Timberland Bancorp
TSBK
$348M
| $70K | ﹤0.01% |
+2,600
| New | +$66.1K |
|
5743
CALL
Titan International
TWI
$466M
| $70K | ﹤0.01% |
9,500
-1,600
| -14% | -$15.2K |
|
5744
Veru
VERU
$36M
| $70K | ﹤0.01% |
8,437
+8,022
| +1,933% | +$92.8K |
|
5745
CALL
Aaon
AAON
$7.3B
| $69K | ﹤0.01% |
800
+100
| +14% | +$8.15K |
|
|
AZUL
5746
PUT
DELISTED
Azul
AZUL
| $69K | ﹤0.01% |
17,400
-32,700
| -65% | -$192K |
|
5747
CBAK Energy Technology Ltd
CBAT
$44.3M
| $69K | ﹤0.01% |
50,954
+48,021
| +1,637% | +$60.3K |
|
|
DMC
5748
CALL
Del Monte Corp
DMC
$1.41B
| $69K | ﹤0.01% |
3,200
+1,700
| +113% | +$40.9K |
|
5749
iShares Russell Top 200 Growth ETF
IWY
$15.9B
| $69K | ﹤0.01% |
+325
| New | +$64.8K |
|
5750
CALL
ManpowerGroup
MAN
$2.44B
| $69K | ﹤0.01% |
1,000
+400
| +67% | +$29.6K |
|
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.