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 | |
|---|---|---|---|---|---|---|
5951
CALL
Spok Holdings
SPOK
$219M
| $57K | ﹤0.01% |
3,900
+1,100
| +39% | +$16.6K |
|
5952
ProShares UltraShort Real Estate
SRS
$15.4M
| $57K | ﹤0.01% |
950
-568
| -37% | -$36.6K |
|
5953
PUT
Victory Capital Holdings
VCTR
$6.16B
| $57K | ﹤0.01% |
1,200
+100
| +9% | +$4.89K |
|
5954
CALL
Veru
VERU
$35.2M
| $57K | ﹤0.01% |
6,850
+4,130
| +152% | +$47.8K |
|
5955
PUT
Zevra Therapeutics
ZVRA
$563M
| $57K | ﹤0.01% |
11,700
-13,500
| -54% | -$64K |
|
|
ONC
5956
CALL
BeOne Medicines Ltd
ONC
$32.5B
| $57K | ﹤0.01% |
400
-1,800
| -82% | -$277K |
|
|
PETQ
5957
CALL
DELISTED
PetIQ, Inc. Class A Common Stock
PETQ
| $57K | ﹤0.01% |
2,600
-3,000
| -54% | -$57.6K |
|
|
ASA
5958
CALL
ASA Gold and Precious Metals
ASA
$925M
| $56K | ﹤0.01% |
3,200
+2,400
| +300% | +$42.2K |
|
|
BAND
5959
Bandwidth Inc
BAND
$1.24B
| $56K | ﹤0.01% |
+3,374
| New | +$63.7K |
|
5960
PUT
Boston Omaha
BOC
$426M
| $56K | ﹤0.01% |
4,200
+1,000
| +31% | +$14.8K |
|
5961
Cintas
CTAS
$82B
| $56K | ﹤0.01% |
+320
| New | +$54.6K |
|
5962
PUT
iHeartMedia
IHRT
$529M
| $56K | ﹤0.01% |
51,500
-7,000
| -12% | -$10.9K |
|
5963
CALL
The Joint Corp
JYNT
$120M
| $56K | ﹤0.01% |
4,000
+3,100
| +344% | +$44.2K |
|
5964
CALL
Limbach Holdings
LMB
$854M
| $56K | ﹤0.01% |
1,000
-600
| -38% | -$29.6K |
|
5965
CALL
El Pollo Loco
LOCO
$499M
| $56K | ﹤0.01% |
5,000
-7,100
| -59% | -$70.7K |
|
5966
Seres Therapeutics
MCRB
$45.3M
| $56K | ﹤0.01% |
3,897
+203
| +5% | +$3.39K |
|
5967
NorthWestern Energy
NWE
$4.25B
| $56K | ﹤0.01% |
+1,121
| New | +$56.6K |
|
|
OPRA
5968
Opera Ltd
OPRA
$1.66B
| $56K | ﹤0.01% |
+4,022
| New | +$57.1K |
|
5969
PUT
PSQ Holdings
PSQH
$13M
| $56K | ﹤0.01% |
1,000
+820
| +456% | +$48.2K |
|
5970
PUT
Riley Exploration Permian
REPX
$735M
| $56K | ﹤0.01% |
2,000
+500
| +33% | +$13.8K |
|
5971
CALL
Tiptree Inc
TIPT
$655M
| $56K | ﹤0.01% |
3,400
+1,400
| +70% | +$23.4K |
|
5972
ProShares UltraPro Short 20+ Year Treasury
TTT
$19.6M
| $56K | ﹤0.01% |
757
-2,753
| -78% | -$212K |
|
5973
CALL
Wipro
WIT
$19.5B
| $56K | ﹤0.01% |
18,400
-81,400
| -82% | -$224K |
|
|
LOGC
5974
DELISTED
ContextLogic
LOGC
| $56K | ﹤0.01% |
9,867
-110,153
| -92% | -$606K |
|
|
ADAP
5975
CALL
DELISTED
Adaptimmune Therapeutics
ADAP
| $55K | ﹤0.01% |
56,700
-13,800
| -20% | -$15.1K |
|
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.