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 | |
|---|---|---|---|---|---|---|
|
JJT
3576
PUT
DELISTED
iPath Series B Bloomberg Tin Subindex Total ReturnSM ETN
JJT
| $342K | ﹤0.01% |
11,000
+800
| +8% | +$53.8K |
|
3577
Adtran
ADTN
$730M
| $341K | ﹤0.01% |
18,192
-2,147
| -11% | -$43.1K |
|
|
BCTXW
3578
CALL
DELISTED
BriaCell Therapeutics Corp Warrant
BCTXW
| $341K | ﹤0.01% |
78,200
-14,200
| -15% | -$33.1K |
|
3579
iShares MSCI Chile ETF
ECH
$1B
| $341K | ﹤0.01% |
12,594
-3,132
| -20% | -$80.4K |
|
3580
PUT
Fresenius Medical Care
FMS
$13.3B
| $341K | ﹤0.01% |
20,900
+19,100
| +1,061% | +$283K |
|
3581
CALL
GXO Logistics
GXO
$6.13B
| $341K | ﹤0.01% |
8,000
-19,300
| -71% | -$774K |
|
3582
CALL
Intellia Therapeutics
NTLA
$1.52B
| $341K | ﹤0.01% |
9,800
+3,600
| +58% | +$171K |
|
3583
Open Text
OTEX
$6.02B
| $341K | ﹤0.01% |
11,520
+1,043
| +10% | +$29.6K |
|
3584
CALL
Pulse Biosciences
PLSE
$2.45B
| $341K | ﹤0.01% |
123,400
+83,200
| +207% | +$187K |
|
|
WRK
3585
CALL
DELISTED
WestRock Company
WRK
| $341K | ﹤0.01% |
9,700
+1,300
| +15% | +$45.3K |
|
|
CMRC
3586
CALL
Commerce.com Inc Series 1
CMRC
$264M
| $340K | ﹤0.01% |
39,000
+2,000
| +5% | +$21.7K |
|
|
HUYA
3587
Huya Inc
HUYA
$561M
| $340K | ﹤0.01% |
86,122
+41,209
| +92% | +$104K |
|
3588
CALL
Leslie's
LESL
$9.83M
| $340K | ﹤0.01% |
1,395
-5,385
| -79% | -$1.5M |
|
3589
AngloGold Ashanti
AU
$39.9B
| $339K | ﹤0.01% |
+17,461
| New | +$286K |
|
3590
CALL
Essex Property Trust
ESS
$18.9B
| $339K | ﹤0.01% |
+1,600
| New | +$350K |
|
3591
CALL
Manhattan Associates
MANH
$9.95B
| $339K | ﹤0.01% |
2,800
-1,500
| -35% | -$184K |
|
3592
CALL
2x Long VIX Futures ETF
UVIX
$268M
| $339K | ﹤0.01% |
15
-4
| -21% | -$365K |
|
3593
PUT
Evercore
EVR
$13.2B
| $338K | ﹤0.01% |
3,100
+2,900
| +1,450% | +$303K |
|
3594
Rapid7
RPD
$642M
| $338K | ﹤0.01% |
+9,974
| New | +$357K |
|
3595
CALL
Safe Bulkers
SB
$761M
| $338K | ﹤0.01% |
116,200
+2,100
| +2% | +$5.82K |
|
|
ROVR
3596
CALL
DELISTED
Rover Group, Inc. Class A Common Stock
ROVR
| $337K | ﹤0.01% |
91,900
+1,900
| +2% | +$8.15K |
|
|
TTCF
3597
CALL
DELISTED
Tattooed Chef, Inc Class A Common Stock
TTCF
| $337K | ﹤0.01% |
274,000
+91,900
| +50% | +$273K |
|
3598
Lumentum
LITE
$50.7B
| $336K | ﹤0.01% |
+6,457
| New | +$397K |
|
3599
CALL
PLAYSTUDIOS Inc
MYPS
$76.9M
| $336K | ﹤0.01% |
86,800
-10,300
| -11% | -$41.3K |
|
3600
CALL
Sabra Healthcare REIT
SBRA
$5.61B
| $336K | ﹤0.01% |
27,100
-37,000
| -58% | -$472K |
|
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.