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 | |
|---|---|---|---|---|---|---|
|
IMGN
4526
DELISTED
Immunogen Inc
IMGN
| $213K | ﹤0.01% |
44,604
-30,772
| -41% | -$162K |
|
|
HZON
4527
PUT
DELISTED
Horizon Acquisition Corporation II
HZON
| $213K | ﹤0.01% |
21,300
+4,500
| +27% | +$44.8K |
|
|
PBFX
4528
PUT
DELISTED
PBF LOGISTICS LP
PBFX
| $213K | ﹤0.01% |
11,300
-3,300
| -23% | -$58.5K |
|
|
IPG
4529
CALL
DELISTED
Interpublic Group of Companies
IPG
| $212K | ﹤0.01% |
8,300
-16,400
| -66% | -$465K |
|
|
MSB
4530
PUT
Mesabi Trust
MSB
$289M
| $212K | ﹤0.01% |
9,900
+7,200
| +267% | +$186K |
|
4531
iShares MSCI USA Momentum Factor ETF
MTUM
$25B
| $212K | ﹤0.01% |
1,620
-667
| -29% | -$93.5K |
|
4532
Murphy Oil
MUR
$5.7B
| $212K | ﹤0.01% |
6,044
-9,216
| -60% | -$319K |
|
4533
PUT
Arrowhead Research
ARWR
$11.9B
| $211K | ﹤0.01% |
6,400
-2,100
| -25% | -$84.8K |
|
|
FL
4534
DELISTED
Foot Locker
FL
| $211K | ﹤0.01% |
6,804
-16,224
| -70% | -$518K |
|
|
LNW
4535
DELISTED
Light & Wonder
LNW
| $211K | ﹤0.01% |
4,921
-4,710
| -49% | -$233K |
|
4536
CALL
Utz Brands
UTZ
$1.25B
| $211K | ﹤0.01% |
14,000
+8,800
| +169% | +$143K |
|
|
QVCGA
4537
DELISTED
QVC Group Inc Series A
QVCGA
| $211K | ﹤0.01% |
2,107
+1,725
| +452% | +$250K |
|
|
FOCS
4538
CALL
DELISTED
Focus Financial Partners Inc. Class A
FOCS
| $211K | ﹤0.01% |
6,700
-23,800
| -78% | -$908K |
|
4539
PUT
Leslie's
LESL
$8.9M
| $210K | ﹤0.01% |
715
+450
| +170% | +$135K |
|
4540
CALL
Urban Outfitters
URBN
$6.35B
| $210K | ﹤0.01% |
10,700
+4,000
| +60% | +$83.8K |
|
4541
PUT
Capitol Federal Financial
CFFN
$1.09B
| $209K | ﹤0.01% |
25,200
+25,000
| +12,500% | +$232K |
|
4542
PUT
Dine Brands
DIN
$456M
| $209K | ﹤0.01% |
3,300
-300
| -8% | -$20.9K |
|
4543
iShares MSCI Singapore ETF
EWS
$1.04B
| $209K | ﹤0.01% |
12,241
-1,339
| -10% | -$24.5K |
|
4544
CALL
Fulcrum Therapeutics
FULC
$273M
| $209K | ﹤0.01% |
25,900
-1,900
| -7% | -$13.6K |
|
4545
CALL
Inovio Pharmaceuticals
INO
$55.7M
| $209K | ﹤0.01% |
10,108
+2,791
| +38% | +$71.5K |
|
4546
PUT
Principal Financial Group
PFG
$24.3B
| $209K | ﹤0.01% |
2,900
-1,000
| -26% | -$71.8K |
|
4547
PUT
Schrodinger
SDGR
$1.13B
| $209K | ﹤0.01% |
8,400
-8,700
| -51% | -$256K |
|
|
PENG
4548
PUT
Penguin Solutions Inc
PENG
$2.7B
| $209K | ﹤0.01% |
13,200
-6,300
| -32% | -$115K |
|
|
CMAX
4549
PUT
DELISTED
CareMax, Inc. Class A Common Stock
CMAX
| $209K | ﹤0.01% |
987
+354
| +56% | +$71.5K |
|
4550
CALL
Green Dot
GDOT
$743M
| $208K | ﹤0.01% |
11,000
-5,400
| -33% | -$124K |
|
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.