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 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
5051
PUT
Semtech
SMTC
$11.1B
| $141K | ﹤0.01% |
4,800
+4,200
| +700% | +$197K |
|
5052
CALL
SurgePays
SURG
$5.35M
| $141K | ﹤0.01% |
31,000
+8,000
| +35% | +$40.8K |
|
5053
Vanguard Morningstar Mid-Cap Growth ETF
VOT
$19.6B
| $141K | ﹤0.01% |
832
+200
| +32% | +$37.9K |
|
5054
PUT
Worthington Enterprises
WOR
$2.78B
| $141K | ﹤0.01% |
6,001
| – | – |
|
|
GOEV
5055
PUT
DELISTED
Canoo Inc. Class A Common Stock
GOEV
| $141K | ﹤0.01% |
164
+131
| +397% | +$191K |
|
|
DCT
5056
CALL
DELISTED
Duck Creek Technologies, Inc. Common Stock
DCT
| $141K | ﹤0.01% |
11,900
-62,100
| -84% | -$821K |
|
5057
CALL
Fluence Energy
FLNC
$1.93B
| $140K | ﹤0.01% |
9,600
+5,100
| +113% | +$77K |
|
5058
CALL
Genprex
GNPX
$2.4M
| $140K | ﹤0.01% |
2
| – | – |
|
5059
Noble Corp
NE
$6.45B
| $140K | ﹤0.01% |
4,766
+371
| +8% | +$11K |
|
5060
Annaly Capital Management
NLY
$17.2B
| $140K | ﹤0.01% |
8,172
-20,775
| -72% | -$523K |
|
5061
PUT
Rexford Industrial Realty
REXR
$8.4B
| $140K | ﹤0.01% |
+2,700
| New | +$167K |
|
5062
CALL
WD-40
WDFC
$3.05B
| $140K | ﹤0.01% |
800
-3,500
| -81% | -$654K |
|
|
XXII
5063
PUT
22nd Century Group
XXII
$1.45M
| – | – |
0
| – | – |
|
|
WWE
5064
PUT
DELISTED
World Wrestling Entertainment
WWE
| $140K | ﹤0.01% |
2,000
-4,000
| -67% | -$273K |
|
5065
CALL
Genie Energy
GNE
$373M
| $139K | ﹤0.01% |
14,900
+14,400
| +2,880% | +$139K |
|
|
5066
Intel
INTC
$459B
| $139K | ﹤0.01% |
5,400
-1,228,659
| -100% | -$41.9M |
|
5067
PUT
Centrus Energy
LEU
$3.63B
| $139K | ﹤0.01% |
3,400
+800
| +31% | +$30.8K |
|
|
MTLS
5068
PUT
Materialise
MTLS
$377M
| $139K | ﹤0.01% |
13,000
+2,800
| +27% | +$35.6K |
|
5069
PUT
Quest Resource Holding
QRHC
$27.2M
| $139K | ﹤0.01% |
16,500
+8,800
| +114% | +$51.6K |
|
|
BPMC
5070
PUT
DELISTED
Blueprint Medicines
BPMC
| $138K | ﹤0.01% |
2,100
+2,000
| +2,000% | +$128K |
|
5071
Capitol Federal Financial
CFFN
$1.12B
| $138K | ﹤0.01% |
16,719
+16,664
| +30,298% | +$155K |
|
5072
PUT
DTE Energy
DTE
$29.5B
| $138K | ﹤0.01% |
1,200
-9,800
| -89% | -$1.27M |
|
|
GAN
5073
CALL
DELISTED
GAN Ltd
GAN
| $138K | ﹤0.01% |
62,200
+5,300
| +9% | +$16.1K |
|
5074
PUT
Henry Schein
HSIC
$9.85B
| $138K | ﹤0.01% |
2,100
-19,800
| -90% | -$1.47M |
|
5075
Fusion Fuel Green
HTOO
$18.3M
| $138K | ﹤0.01% |
795
+398
| +100% | +$98.3K |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.