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 | |
|---|---|---|---|---|---|---|
2876
PUT
Newell Brands
NWL
$2.23B
| $672K | ﹤0.01% |
51,400
+16,600
| +48% | +$227K |
|
2877
PUT
Terex
TEX
$7.77B
| $670K | ﹤0.01% |
15,700
-13,600
| -46% | -$548K |
|
|
RDFN
2878
PUT
DELISTED
Redfin
RDFN
| $669K | ﹤0.01% |
157,800
+65,400
| +71% | +$308K |
|
2879
CALL
Acadia Pharmaceuticals
ACAD
$4.34B
| $668K | ﹤0.01% |
42,000
-15,400
| -27% | -$241K |
|
2880
CALL
Extreme Networks
EXTR
$3.88B
| $668K | ﹤0.01% |
36,500
+1,900
| +5% | +$33.3K |
|
2881
PUT
NOV
NOV
$7.49B
| $668K | ﹤0.01% |
32,000
+11,700
| +58% | +$246K |
|
2882
Delta Air Lines
DAL
$56.9B
| $667K | ﹤0.01% |
20,304
-337,172
| -94% | -$11.2M |
|
2883
CALL
Tenable Holdings
TENB
$3.65B
| $667K | ﹤0.01% |
17,500
+13,800
| +373% | +$506K |
|
2884
CALL
Roundhill Ball Metaverse ETF
METV
$212M
| $666K | ﹤0.01% |
+80,700
| New | +$603K |
|
2885
Copart
CPRT
$27.4B
| $665K | ﹤0.01% |
+21,866
| New | +$655K |
|
2886
Boeing
BA
$167B
| $663K | ﹤0.01% |
3,482
| – | – |
|
|
SNV
2887
DELISTED
Synovus
SNV
| $663K | ﹤0.01% |
+17,674
| New | +$702K |
|
2888
CALL
CenterPoint Energy
CNP
$28.8B
| $662K | ﹤0.01% |
22,100
-12,200
| -36% | -$355K |
|
2889
CALL
Eversource Energy
ES
$28.2B
| $662K | ﹤0.01% |
7,900
-700
| -8% | -$55.5K |
|
2890
PUT
Magna International
MGA
$17.9B
| $662K | ﹤0.01% |
11,800
-15,100
| -56% | -$848K |
|
2891
CALL
Roivant Sciences
ROIV
$25B
| $662K | ﹤0.01% |
+82,900
| New | +$461K |
|
2892
ProShares UltraPro Short Dow 30
SDOW
$166M
| $662K | ﹤0.01% |
6,148
+4,149
| +208% | +$491K |
|
|
ONEM
2893
CALL
DELISTED
1Life Healthcare
ONEM
| $661K | ﹤0.01% |
39,600
-126,400
| -76% | -$2.14M |
|
|
AMED
2894
PUT
DELISTED
Amedisys
AMED
| $659K | ﹤0.01% |
7,900
+4,100
| +108% | +$370K |
|
2895
Omnicom Group
OMC
$23.5B
| $659K | ﹤0.01% |
+8,081
| New | +$600K |
|
2896
CALL
Prospect Capital
PSEC
$1.14B
| $659K | ﹤0.01% |
94,300
+7,000
| +8% | +$50.3K |
|
2897
CALL
GoPro
GPRO
$119M
| $658K | ﹤0.01% |
132,300
-35,200
| -21% | -$185K |
|
|
SBOW
2898
CALL
DELISTED
SilverBow Resources, Inc.
SBOW
| $658K | ﹤0.01% |
23,300
+8,600
| +59% | +$272K |
|
2899
PUT
Republic Services
RSG
$67.6B
| $657K | ﹤0.01% |
5,100
-4,800
| -48% | -$640K |
|
2900
ITT
ITT
$17.3B
| $656K | ﹤0.01% |
+8,099
| New | +$627K |
|
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.