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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4526
CALL
Vishay Intertechnology
VSH
$4.6B
| $157K | ﹤0.01% |
7,300
-11,600
| -61% | -$245K |
|
|
WW
4527
CALL
DELISTED
WW International
WW
| $157K | ﹤0.01% |
40,700
+5,700
| +16% | +$22.8K |
|
4528
CALL
Carter's
CRI
$1.43B
| $156K | ﹤0.01% |
2,100
+300
| +17% | +$21.5K |
|
4529
PUT
Green Dot
GDOT
$750M
| $156K | ﹤0.01% |
9,900
+7,000
| +241% | +$129K |
|
4530
PUT
Ingredion
INGR
$6.42B
| $156K | ﹤0.01% |
1,600
-900
| -36% | -$83K |
|
4531
CALL
Prudential
PUK
$36.4B
| $156K | ﹤0.01% |
+5,700
| New | +$130K |
|
4532
Schwab Emerging Markets Equity ETF
SCHE
$12.2B
| $156K | ﹤0.01% |
+6,600
| New | +$154K |
|
4533
CALL
Steven Madden
SHOO
$3.17B
| $156K | ﹤0.01% |
4,900
+2,800
| +133% | +$87.6K |
|
|
SII
4534
PUT
Sprott
SII
$2.68B
| $156K | ﹤0.01% |
4,700
+1,100
| +31% | +$38.2K |
|
|
SLGC
4535
DELISTED
SomaLogic, Inc. Class A Common Stock
SLGC
| $156K | ﹤0.01% |
62,259
-29,105
| -32% | -$81.2K |
|
4536
CALL
Compass
COMP
$8.67B
| $155K | ﹤0.01% |
66,900
-105,100
| -61% | -$276K |
|
4537
Crescent Energy
CRGY
$3.65B
| $155K | ﹤0.01% |
13,007
+4,704
| +57% | +$64.7K |
|
4538
PUT
Red Robin
RRGB
$139M
| $155K | ﹤0.01% |
27,800
-2,500
| -8% | -$18.6K |
|
4539
PUT
Artisan Partners
APAM
$2.86B
| $154K | ﹤0.01% |
5,200
+4,000
| +333% | +$123K |
|
4540
PUT
Coca-Cola Europacific Partners
CCEP
$49.1B
| $154K | ﹤0.01% |
2,800
-600
| -18% | -$30.1K |
|
4541
CALL
The Honest Company
HNST
$412M
| $154K | ﹤0.01% |
51,200
+800
| +2% | +$2.5K |
|
4542
PUT
Installed Building Products
IBP
$6.21B
| $154K | ﹤0.01% |
1,800
+1,300
| +260% | +$110K |
|
4543
PUT
Old National Bancorp
ONB
$10.2B
| $154K | ﹤0.01% |
8,600
+8,500
| +8,500% | +$156K |
|
4544
PDS Biotechnology
PDSB
$37.4M
| $154K | ﹤0.01% |
+11,724
| New | +$82.7K |
|
4545
PUT
SK Telecom
SKM
$11.4B
| $154K | ﹤0.01% |
7,500
+4,900
| +188% | +$99.4K |
|
4546
Textron
TXT
$14.9B
| $154K | ﹤0.01% |
+2,189
| New | +$149K |
|
4547
Petco
WOOF
$797M
| $154K | ﹤0.01% |
+16,330
| New | +$167K |
|
|
NVRO
4548
CALL
DELISTED
NEVRO CORP.
NVRO
| $154K | ﹤0.01% |
3,900
-66,300
| -94% | -$2.76M |
|
|
MRNS
4549
CALL
DELISTED
Marinus Pharmaceuticals, Inc
MRNS
| $154K | ﹤0.01% |
38,800
+22,300
| +135% | +$110K |
|
4550
CALL
ICICI Bank
IBN
$107B
| $153K | ﹤0.01% |
7,000
-12,600
| -64% | -$281K |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.