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 | |
|---|---|---|---|---|---|---|
1751
PUT
Lantheus
LNTH
$6.82B
| $3.29M | ﹤0.01% |
41,000
-8,900
| -18% | -$653K |
|
1752
CALL
ChargePoint
CHPT
$133M
| $3.29M | ﹤0.01% |
108,925
+14,795
| +16% | +$482K |
|
|
HES
1753
CALL
DELISTED
Hess
HES
| $3.29M | ﹤0.01% |
22,300
-20,300
| -48% | -$3.11M |
|
1754
Symbotic
SYM
$5.11B
| $3.29M | ﹤0.01% |
93,493
+30,533
| +48% | +$1.24M |
|
|
OKLO
1755
CALL
Oklo
OKLO
$7B
| $3.29M | ﹤0.01% |
388,000
+362,400
| +1,416% | +$4.08M |
|
1756
PUT
Landstar System
LSTR
$6.8B
| $3.28M | ﹤0.01% |
17,800
-13,100
| -42% | -$2.36M |
|
|
DENT
1757
PUT
DELISTED
AdvisorShares Dent Tactical ETF
DENT
| $3.28M | ﹤0.01% |
457,700
-565,300
| -55% | -$4.05M |
|
1758
PUT
Semtech
SMTC
$11.7B
| $3.28M | ﹤0.01% |
109,800
-345,100
| -76% | -$12.1M |
|
1759
QuantumScape Corp
QS
$3B
| $3.28M | ﹤0.01% |
666,079
-329,555
| -33% | -$1.84M |
|
1760
First Citizens BancShares
FCNCA
$24.6B
| $3.27M | ﹤0.01% |
+1,942
| New | +$3.25M |
|
1761
CALL
BellRing Brands
BRBR
$1.51B
| $3.26M | ﹤0.01% |
57,000
-9,200
| -14% | -$527K |
|
1762
Knight Transportation
KNX
$11.8B
| $3.25M | ﹤0.01% |
65,190
+45,354
| +229% | +$2.22M |
|
1763
Etsy
ETSY
$7.65B
| $3.25M | ﹤0.01% |
55,100
+15,086
| +38% | +$965K |
|
1764
Amphenol
APH
$188B
| $3.24M | ﹤0.01% |
+48,096
| New | +$3.03M |
|
1765
CALL
Murphy USA
MUSA
$11.3B
| $3.24M | ﹤0.01% |
6,900
+4,700
| +214% | +$2.05M |
|
1766
CALL
Rambus
RMBS
$10.4B
| $3.24M | ﹤0.01% |
55,100
-35,500
| -39% | -$2.03M |
|
1767
CALL
Corcept Therapeutics
CORT
$10.2B
| $3.24M | ﹤0.01% |
99,600
-201,100
| -67% | -$5.51M |
|
1768
Kinross Gold
KGC
$28.5B
| $3.23M | ﹤0.01% |
388,752
+40,448
| +12% | +$293K |
|
1769
ProShares UltraShort Bloomberg Natural Gas
KOLD
$110M
| $3.23M | ﹤0.01% |
65,652
-5,930
| -8% | -$335K |
|
1770
PUT
Conagra Brands
CAG
$7.07B
| $3.23M | ﹤0.01% |
113,600
-27,200
| -19% | -$818K |
|
1771
PUT
State Street SPDR Portfolio Europe ETF
SPEU
$712M
| $3.23M | ﹤0.01% |
64,500
-23,400
| -27% | -$993K |
|
|
FYBR
1772
CALL
DELISTED
Frontier Communications
FYBR
| $3.23M | ﹤0.01% |
123,200
+16,700
| +16% | +$416K |
|
1773
PUT
Rapid7
RPD
$634M
| $3.22M | ﹤0.01% |
74,500
-111,000
| -60% | -$4.62M |
|
1774
PUT
Fluor
FLR
$7.29B
| $3.22M | ﹤0.01% |
73,900
-54,400
| -42% | -$2.26M |
|
1775
PUT
Bausch Health
BHC
$1.65B
| $3.21M | ﹤0.01% |
461,200
-41,400
| -8% | -$313K |
|
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.