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 | |
|---|---|---|---|---|---|---|
8351
Gogoro
GGR
$69.9M
| $3K | ﹤0.01% |
54
-29
| -35% | -$1.93K |
|
8352
Graham Corp
GHM
$1.22B
| $3K | ﹤0.01% |
327
-1,087
| -77% | -$10.1K |
|
|
CBIO
8353
PUT
Crescent Biopharma
CBIO
$626M
| $3K | ﹤0.01% |
+10
| New | +$1.47K |
|
8354
Grove Collaborative
GROV
$45.8M
| $3K | ﹤0.01% |
1,969
+404
| +26% | +$2.06K |
|
8355
PUT
Hamilton Beach Brands
HBB
$300M
| $3K | ﹤0.01% |
300
-100
| -25% | -$1.29K |
|
8356
Helios Technologies
HLIO
$2.59B
| $3K | ﹤0.01% |
68
-28
| -29% | -$1.51K |
|
8357
Strategy Shares Nasdaq 7HANDL Index ETF
HNDL
$630M
| $3K | ﹤0.01% |
154
-1,280
| -89% | -$25.3K |
|
8358
PUT
Humacyte
HUMA
$182M
| $3K | ﹤0.01% |
1,700
-20,200
| -92% | -$61.3K |
|
|
ICAD
8359
DELISTED
iCAD Inc
ICAD
| $3K | ﹤0.01% |
1,641
+1,293
| +372% | +$2.41K |
|
8360
iShares Self-Driving EV and Tech ETF
IDRV
$124M
| $3K | ﹤0.01% |
100
-635
| -86% | -$22.9K |
|
8361
PUT
IGC Pharma
IGC
$27.4M
| $3K | ﹤0.01% |
10,700
-1,700
| -14% | -$693 |
|
|
IGMS
8362
PUT
DELISTED
IGM Biosciences
IGMS
| $3K | ﹤0.01% |
200
-700
| -78% | -$14K |
|
8363
PUT
iHeartMedia
IHRT
$547M
| $3K | ﹤0.01% |
500
-39,100
| -99% | -$301K |
|
8364
iShares Latin America 40 ETF
ILF
$3.79B
| $3K | ﹤0.01% |
+133
| New | +$3.31K |
|
|
INFA
8365
PUT
DELISTED
Informatica
INFA
| $3K | ﹤0.01% |
200
-3,400
| -94% | -$61K |
|
|
ITOS
8366
PUT
DELISTED
iTeos Therapeutics
ITOS
| $3K | ﹤0.01% |
+200
| New | +$3.91K |
|
|
JFIN
8367
CALL
Jiayin Group
JFIN
$113M
| $3K | ﹤0.01% |
1,500
-400
| -21% | -$899 |
|
|
JFIN
8368
PUT
Jiayin Group
JFIN
$113M
| $3K | ﹤0.01% |
1,400
-15,000
| -91% | -$33.7K |
|
8369
CALL
St. Joe Company
JOE
$3.56B
| $3K | ﹤0.01% |
100
-18,400
| -99% | -$659K |
|
|
OPLN
8370
Openlane
OPLN
$4.25B
| $3K | ﹤0.01% |
231
-16,370
| -99% | -$219K |
|
8371
Kelly Services Class A
KELYA
$545M
| $3K | ﹤0.01% |
182
-100
| -35% | -$1.6K |
|
8372
Knowles
KN
$3.2B
| $3K | ﹤0.01% |
+213
| New | +$3.09K |
|
8373
PUT
Standard BioTools
LAB
$303M
| $3K | ﹤0.01% |
3,400
+100
| +3% | +$123 |
|
8374
PUT
loanDepot
LDI
$541M
| $3K | ﹤0.01% |
2,400
-100
| -4% | -$153 |
|
8375
Lifestance Health
LFST
$4.15B
| $3K | ﹤0.01% |
+635
| New | +$3.93K |
|
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.