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 | |
|---|---|---|---|---|---|---|
|
BHR
6576
PUT
Braemar Hotels & Resorts
BHR
$156M
| $45K | ﹤0.01% |
10,600
+3,000
| +39% | +$15.2K |
|
6577
Quadratic Deflation ETF
BNDD
$24.5M
| $45K | ﹤0.01% |
261
+130
| +99% | +$23.3K |
|
|
BRY
6578
DELISTED
Berry Corp
BRY
| $45K | ﹤0.01% |
6,005
-9,431
| -61% | -$79.7K |
|
6579
CPS Technologies
CPSH
$75.5M
| $45K | ﹤0.01% |
16,056
+9,164
| +133% | +$31K |
|
6580
CALL
Dole
DOLE
$1.35B
| $45K | ﹤0.01% |
6,300
-8,000
| -56% | -$71.1K |
|
6581
PUT
Encore Capital Group
ECPG
$2.02B
| $45K | ﹤0.01% |
1,000
-1,200
| -55% | -$69K |
|
6582
Embecta
EMBC
$216M
| $45K | ﹤0.01% |
1,567
+1,562
| +31,240% | +$46.2K |
|
6583
Gildan
GIL
$10.3B
| $45K | ﹤0.01% |
+1,592
| New | +$47.5K |
|
6584
PUT
Iovance Biotherapeutics
IOVA
$1.82B
| $45K | ﹤0.01% |
4,700
-31,300
| -87% | -$361K |
|
6585
iShares Global Healthcare ETF
IXJ
$4.07B
| $45K | ﹤0.01% |
+600
| New | +$48.5K |
|
6586
CALL
Koppers
KOP
$943M
| $45K | ﹤0.01% |
2,200
+100
| +5% | +$2.3K |
|
6587
CALL
Merit Medical Systems
MMSI
$5.08B
| $45K | ﹤0.01% |
800
-400
| -33% | -$23K |
|
6588
Monro
MNRO
$383M
| $45K | ﹤0.01% |
1,037
+728
| +236% | +$34.5K |
|
6589
CALL
National Health Investors
NHI
$3.72B
| $45K | ﹤0.01% |
800
-1,400
| -64% | -$88.2K |
|
|
NSA
6590
CALL
DELISTED
National Storage Affiliates Trust
NSA
| $45K | ﹤0.01% |
1,100
-2,100
| -66% | -$107K |
|
|
NVVE
6591
DELISTED
Nuvve Holding Corp
NVVE
| – | – |
0
| – | – |
|
6592
CALL
Preferred Bank
PFBC
$1.24B
| $45K | ﹤0.01% |
700
-400
| -36% | -$27.9K |
|
6593
PUT
Pliant Therapeutics
PLRX
$64.4M
| $45K | ﹤0.01% |
+2,200
| New | +$42.1K |
|
|
RDUS
6594
CALL
DELISTED
Radius Recycling
RDUS
| $45K | ﹤0.01% |
1,600
-6,900
| -81% | -$231K |
|
6595
Repay Holdings
RPAY
$331M
| $45K | ﹤0.01% |
+6,433
| New | +$70.2K |
|
6596
ProShares UltraShort Materials
SMN
$4.17M
| $45K | ﹤0.01% |
743
-790
| -52% | -$41.8K |
|
6597
PUT
Thryv Holdings
THRY
$180M
| $45K | ﹤0.01% |
2,000
-1,200
| -38% | -$29.9K |
|
6598
PUT
Telus
TU
$14.9B
| $45K | ﹤0.01% |
2,300
-18,300
| -89% | -$409K |
|
6599
PUT
X4 Pharmaceuticals
XFOR
$375M
| $45K | ﹤0.01% |
893
+840
| +1,585% | +$29K |
|
|
BKI
6600
CALL
DELISTED
Black Knight, Inc. Common Stock
BKI
| $45K | ﹤0.01% |
700
-4,000
| -85% | -$263K |
|
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.