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 | |
|---|---|---|---|---|---|---|
2226
PUT
CoreCivic
CXW
$3.08B
| $1.51M | ﹤0.01% |
171,100
-43,400
| -20% | -$438K |
|
2227
PUT
CoStar Group
CSGP
$11.9B
| $1.51M | ﹤0.01% |
21,700
+20,200
| +1,347% | +$1.4M |
|
|
SAVE
2228
CALL
DELISTED
Spirit Airlines, Inc.
SAVE
| $1.51M | ﹤0.01% |
80,300
-69,600
| -46% | -$1.63M |
|
|
CCXI
2229
PUT
DELISTED
ChemoCentryx, Inc.
CCXI
| $1.51M | ﹤0.01% |
29,200
+16,600
| +132% | +$686K |
|
2230
PUT
Host Hotels & Resorts
HST
$17.1B
| $1.51M | ﹤0.01% |
94,900
+70,300
| +286% | +$1.22M |
|
2231
CALL
Webster Financial
WBS
$12.5B
| $1.5M | ﹤0.01% |
33,300
+20,700
| +164% | +$958K |
|
|
SGEN
2232
PUT
DELISTED
Seagen Inc. Common Stock
SGEN
| $1.5M | ﹤0.01% |
11,000
-22,100
| -67% | -$3.6M |
|
2233
ProShares Ultra Bloomberg Crude Oil
UCO
$421M
| $1.5M | ﹤0.01% |
57,247
-30,897
| -35% | -$1.06M |
|
2234
CALL
Global Ship Lease
GSL
$1.57B
| $1.5M | ﹤0.01% |
95,200
-7,100
| -7% | -$126K |
|
|
PR
2235
PUT
Permian Resources
PR
$17.3B
| $1.5M | ﹤0.01% |
221,000
+48,100
| +28% | +$332K |
|
2236
PUT
Regency Centers
REG
$15.1B
| $1.5M | ﹤0.01% |
27,900
| – | – |
|
2237
CALL
TD Synnex
SNX
$19.4B
| $1.5M | ﹤0.01% |
18,500
+18,400
| +18,400% | +$1.76M |
|
2238
CALL
Ecolab
ECL
$76.2B
| $1.5M | ﹤0.01% |
10,400
+1,800
| +21% | +$292K |
|
2239
State Street SPDR Portfolio S&P 500 Value ETF
SPYV
$36.2B
| $1.5M | ﹤0.01% |
+43,500
| New | +$1.65M |
|
2240
Domino's
DPZ
$11.5B
| $1.5M | ﹤0.01% |
4,833
-5,118
| -51% | -$1.94M |
|
2241
PUT
Rogers Corp
ROG
$2.28B
| $1.5M | ﹤0.01% |
6,200
-2,700
| -30% | -$699K |
|
2242
PUT
Tanger
SKT
$4.82B
| $1.5M | ﹤0.01% |
109,600
-41,000
| -27% | -$637K |
|
2243
CALL
Blackstone Mortgage Trust
BXMT
$2.84B
| $1.5M | ﹤0.01% |
64,100
-14,500
| -18% | -$420K |
|
2244
J.M. Smucker
SJM
$12.8B
| $1.49M | ﹤0.01% |
+10,879
| New | +$1.48M |
|
2245
CALL
Virtu Financial
VIRT
$5.13B
| $1.49M | ﹤0.01% |
71,600
-9,400
| -12% | -$216K |
|
2246
United Airlines
UAL
$38.9B
| $1.49M | ﹤0.01% |
45,682
+43,682
| +2,184% | +$1.62M |
|
|
ATCO
2247
DELISTED
Atlas Corp.
ATCO
| $1.49M | ﹤0.01% |
106,904
+98,291
| +1,141% | +$1.28M |
|
2248
PUT
FuelCell Energy
FCEL
$1.7B
| $1.48M | ﹤0.01% |
14,513
+1,356
| +10% | +$162K |
|
2249
PUT
Sempra
SRE
$60.5B
| $1.48M | ﹤0.01% |
19,800
+800
| +4% | +$64.7K |
|
2250
CALL
Vulcan Materials
VMC
$37.1B
| $1.48M | ﹤0.01% |
9,400
+6,900
| +276% | +$1.12M |
|
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.