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 |
Boeing
BA
|
+$55.8M |
| 2 |
Microsoft
MSFT
|
+$42.2M |
| 3 |
Pinduoduo
PDD
|
+$41.3M |
| 4 |
Apple
AAPL
|
+$32M |
| 5 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$28.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$95.2M |
| 2 |
Citigroup
C
|
+$57.2M |
| 3 |
Pfizer
PFE
|
+$56.4M |
| 4 |
TSMC
TSM
|
+$39.7M |
| 5 |
Starbucks
SBUX
|
+$35.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.4% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.15% |
| 4 | Industrials | 0.13% |
| 5 | Financials | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
7051
CALL
CareTrust REIT
CTRE
$10B
| $12K | ﹤0.01% |
400
+300
| +300% | +$8.49K |
|
|
CVAC
7052
DELISTED
CureVac
CVAC
| $12K | ﹤0.01% |
4,362
-29
| -0.7% | -$96 |
|
|
EU
7053
CALL
enCore Energy
EU
$214M
| $12K | ﹤0.01% |
3,000
-232,000
| -99% | -$860K |
|
7054
Fidelity MSCI Consumer Discretionary Index ETF
FDIS
$1.64B
| $12K | ﹤0.01% |
+138
| New | +$11.4K |
|
7055
CALL
Foghorn Therapeutics
FHTX
$278M
| $12K | ﹤0.01% |
+1,300
| New | +$9.41K |
|
7056
Franklin Wireless
FKWL
$27.1M
| $12K | ﹤0.01% |
2,794
+1,293
| +86% | +$5.26K |
|
7057
PUT
Gaia
GAIA
$46.8M
| $12K | ﹤0.01% |
2,500
-1,400
| -36% | -$6.53K |
|
7058
CALL
GoPro
GPRO
$123M
| $12K | ﹤0.01% |
9,300
-33,200
| -78% | -$45.7K |
|
7059
PUT
Hawkins
HWKN
$2.89B
| $12K | ﹤0.01% |
+100
| New | +$11.3K |
|
7060
CALL
Hyster-Yale Materials Handling
HY
$578M
| $12K | ﹤0.01% |
200
-200
| -50% | -$13K |
|
7061
IHS Holding
IHS
$2.77B
| $12K | ﹤0.01% |
4,101
+2,754
| +204% | +$8.47K |
|
7062
Ingles Markets
IMKTA
$1.72B
| $12K | ﹤0.01% |
172
-90
| -34% | -$6.62K |
|
7063
PUT
Inogen
INGN
$176M
| $12K | ﹤0.01% |
1,300
-1,700
| -57% | -$17.8K |
|
7064
CALL
KORU Medical Systems
KRMD
$184M
| $12K | ﹤0.01% |
4,400
-400
| -8% | -$986 |
|
7065
CALL
Key Tronic
KTCC
$42.9M
| $12K | ﹤0.01% |
2,100
-300
| -13% | -$1.31K |
|
7066
PUT
Liberty Latin America Class C
LILAK
$1.64B
| $12K | ﹤0.01% |
1,430
+330
| +30% | +$2.9K |
|
7067
MediWound
MDWD
$186M
| $12K | ﹤0.01% |
694
+128
| +23% | +$2.34K |
|
|
RJET
7068
Republic Airways Holdings
RJET
$850M
| $12K | ﹤0.01% |
668
-5,483
| -89% | -$113K |
|
|
MTA
7069
PUT
Metalla Royalty & Streaming
MTA
$677M
| $12K | ﹤0.01% |
4,200
-600
| -13% | -$1.76K |
|
7070
CALL
Microvast
MVST
$245M
| $12K | ﹤0.01% |
50,400
-3,500
| -6% | -$1.17K |
|
7071
PUT
Nkarta
NKTX
$152M
| $12K | ﹤0.01% |
2,800
-17,900
| -86% | -$102K |
|
|
NOTE
7072
CALL
DELISTED
FiscalNote
NOTE
| $12K | ﹤0.01% |
+808
| New | +$14.1K |
|
7073
CALL
Northwest Natural Holdings
NWN
$2.16B
| $12K | ﹤0.01% |
300
+100
| +50% | +$3.91K |
|
|
7074
PUT
Northwest Natural Holdings
NWN
$2.16B
| $12K | ﹤0.01% |
300
-200
| -40% | -$7.81K |
|
7075
PUT
Old Second Bancorp
OSBC
$1.29B
| $12K | ﹤0.01% |
800
| – | – |
|
Similar funds
Simplex Trading's Q3 2024 Portfolio in Review
As of Q3 2024, Simplex Trading held 9,964 positions worth $170B, up 5.3% from $162B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q3 2024 filing shows 1,185 new, 3,232 increased, 3,829 reduced and 1,476 closed positions. Its largest new stake was Boeing: 325,328 shares worth $49.5M. The largest sale was Broadcom, an estimated $95.2M.
By sector, the portfolio is most concentrated in Technology at 0.4% of assets, down from 0.53% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q3 2024 buy was Boeing: 325,328 shares worth $49.5M.
- Simplex Trading added most to Pinduoduo in Q3 2024, an estimated $41.3M increase.
- Simplex Trading's biggest Q3 2024 reduction was Citigroup, cutting an estimated $57.2M.
- Simplex Trading fully exited Broadcom in Q3 2024, selling an estimated $95.2M.
- Simplex Trading's ten largest holdings make up 50% of its $170B portfolio in Q3 2024.
- Simplex Trading opened 1,185 new positions and closed 1,476 in Q3 2024.
- Simplex Trading's portfolio value rose 5.3% quarter-over-quarter to $170B.
Based on Simplex Trading's 13F filing for Q3 2024, filed 8 Nov 2024.