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 | |
|---|---|---|---|---|---|---|
4401
PUT
Qualys
QLYS
$4.76B
| $256K | ﹤0.01% |
1,800
-5,000
| -74% | -$761K |
|
|
LOGC
4402
PUT
DELISTED
ContextLogic
LOGC
| $256K | ﹤0.01% |
45,000
-206,900
| -82% | -$1.14M |
|
4403
PUT
Black Hills Corp
BKH
$5.55B
| $255K | ﹤0.01% |
4,700
+2,200
| +88% | +$120K |
|
4404
CALL
Moelis & Co
MC
$4.85B
| $255K | ﹤0.01% |
4,500
+2,800
| +165% | +$151K |
|
4405
PUT
NNN REIT
NNN
$9.29B
| $255K | ﹤0.01% |
6,000
+5,100
| +567% | +$212K |
|
4406
PUT
NovoCure
NVCR
$1.76B
| $255K | ﹤0.01% |
14,900
-46,700
| -76% | -$821K |
|
|
ASRT
4407
CALL
DELISTED
Assertio
ASRT
| $254K | ﹤0.01% |
13,693
+8,766
| +178% | +$130K |
|
4408
PUT
CorVel
CRVL
$3.18B
| $254K | ﹤0.01% |
+3,000
| New | +$248K |
|
4409
Direxion Daily Gold Miners Index Bull 2X ETF
NUGT
$840M
| $254K | ﹤0.01% |
6,778
-86,341
| -93% | -$3.41M |
|
4410
CALL
Redwire
RDW
$1.86B
| $254K | ﹤0.01% |
35,500
+27,200
| +328% | +$131K |
|
4411
CALL
Community Health Systems
CYH
$382M
| $253K | ﹤0.01% |
75,300
-115,200
| -60% | -$388K |
|
4412
Douglas Emmett
DEI
$2.05B
| $253K | ﹤0.01% |
19,052
+4,427
| +30% | +$60K |
|
4413
PUT
Krispy Kreme
DNUT
$562M
| $253K | ﹤0.01% |
23,600
-101,800
| -81% | -$1.26M |
|
4414
CALL
Flowers Foods
FLO
$1.58B
| $253K | ﹤0.01% |
11,400
-9,000
| -44% | -$213K |
|
|
GAMB
4415
PUT
DELISTED
Gambling.com
GAMB
| $253K | ﹤0.01% |
30,900
+28,000
| +966% | +$236K |
|
4416
CALL
OGE Energy
OGE
$9.86B
| $253K | ﹤0.01% |
7,100
+6,700
| +1,675% | +$235K |
|
4417
CALL
PSQ Holdings
PSQH
$12.4M
| $253K | ﹤0.01% |
4,487
+974
| +28% | +$57.3K |
|
4418
Tenable Holdings
TENB
$3.47B
| $253K | ﹤0.01% |
5,809
+1,377
| +31% | +$60.7K |
|
4419
PUT
Brookdale Senior Living
BKD
$3.55B
| $252K | ﹤0.01% |
36,900
-5,200
| -12% | -$35.2K |
|
|
FBRT
4420
CALL
Franklin BSP Realty Trust
FBRT
$580M
| $252K | ﹤0.01% |
20,000
+18,900
| +1,718% | +$241K |
|
4421
Amplify Energy
AMPY
$158M
| $251K | ﹤0.01% |
+37,111
| New | +$244K |
|
4422
Cinemark Holdings
CNK
$4.07B
| $251K | ﹤0.01% |
+11,623
| New | +$211K |
|
4423
Dine Brands
DIN
$462M
| $251K | ﹤0.01% |
6,940
+5,114
| +280% | +$212K |
|
4424
CALL
Green Brick Partners
GRBK
$3.09B
| $251K | ﹤0.01% |
4,400
-3,400
| -44% | -$190K |
|
4425
LifeMD
LFMD
$176M
| $251K | ﹤0.01% |
+36,639
| New | +$335K |
|
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.