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 | |
|---|---|---|---|---|---|---|
3501
Teleflex
TFX
$5.94B
| $370K | ﹤0.01% |
+1,484
| New | +$327K |
|
|
SILV
3502
PUT
DELISTED
SilverCrest Metals Inc. Common Shares
SILV
| $370K | ﹤0.01% |
61,700
-41,700
| -40% | -$249K |
|
3503
CALL
Ironwood Pharmaceuticals
IRWD
$626M
| $369K | ﹤0.01% |
29,800
+2,600
| +10% | +$29.5K |
|
3504
CALL
LCI Industries
LCII
$2.62B
| $369K | ﹤0.01% |
4,000
+2,400
| +150% | +$236K |
|
|
STR
3505
CALL
DELISTED
Sitio Royalties
STR
| $369K | ﹤0.01% |
12,900
-33,100
| -72% | -$958K |
|
3506
CALL
Urban Outfitters
URBN
$6.44B
| $369K | ﹤0.01% |
15,500
+4,800
| +45% | +$120K |
|
3507
Autohome
ATHM
$2.65B
| $368K | ﹤0.01% |
+12,028
| New | +$358K |
|
3508
CALL
Essential Properties Realty Trust
EPRT
$6.94B
| $368K | ﹤0.01% |
15,700
+9,900
| +171% | +$216K |
|
3509
PUT
Fox Class B
FOX
$21.7B
| $368K | ﹤0.01% |
12,200
+1,900
| +18% | +$54.4K |
|
|
MESO
3510
CALL
Mesoblast
MESO
$1.87B
| $368K | ﹤0.01% |
63,250
+18,700
| +42% | +$117K |
|
|
EH
3511
PUT
EHang Holdings
EH
$397M
| $367K | ﹤0.01% |
42,800
+33,000
| +337% | +$172K |
|
3512
CALL
Flowers Foods
FLO
$1.6B
| $367K | ﹤0.01% |
12,800
+10,300
| +412% | +$289K |
|
3513
PUT
Corpay
CPAY
$25.1B
| $367K | ﹤0.01% |
2,000
-1,300
| -39% | -$238K |
|
3514
CALL
Anterix
ATEX
$1.78B
| $366K | ﹤0.01% |
11,400
+10,200
| +850% | +$347K |
|
3515
CALL
Kosmos Energy
KOS
$1.39B
| $366K | ﹤0.01% |
57,700
-312,600
| -84% | -$1.95M |
|
|
VRE
3516
DELISTED
Veris Residential
VRE
| $366K | ﹤0.01% |
+22,987
| New | +$339K |
|
3517
State Street SPDR Portfolio S&P 500 Growth ETF
SPYG
$50.4B
| $365K | ﹤0.01% |
+7,207
| New | +$375K |
|
3518
CALL
Children's Place
PLCE
$55.8M
| $364K | ﹤0.01% |
10,000
-7,100
| -42% | -$266K |
|
3519
PUT
Steven Madden
SHOO
$3.22B
| $364K | ﹤0.01% |
11,400
+10,600
| +1,325% | +$332K |
|
3520
CALL
Taylor Morrison
TMHC
| $364K | ﹤0.01% |
12,000
+6,700
| +126% | +$187K |
|
3521
CALL
Tandem Diabetes Care
TNDM
$1.22B
| $364K | ﹤0.01% |
8,100
-17,000
| -68% | -$770K |
|
3522
CALL
Cemex
CX
$17.3B
| $363K | ﹤0.01% |
89,700
-6,800
| -7% | -$27.2K |
|
|
LNW
3523
PUT
DELISTED
Light & Wonder
LNW
| $363K | ﹤0.01% |
6,200
+900
| +17% | +$51.5K |
|
3524
CALL
Credo Technology Group
CRDO
$35.9B
| $362K | ﹤0.01% |
27,200
+12,600
| +86% | +$167K |
|
3525
PUT
Groupon
GRPN
$1.07B
| $362K | ﹤0.01% |
42,300
-29,400
| -41% | -$228K |
|
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.