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 | |
|---|---|---|---|---|---|---|
2601
PUT
Invesco CurrencyShares Swiss Franc Trust
FXF
$409M
| $868K | ﹤0.01% |
9,000
-600
| -6% | -$55.6K |
|
2602
CALL
Power Integrations
POWI
$3.54B
| $867K | ﹤0.01% |
12,100
+7,800
| +181% | +$557K |
|
2603
3M
MMM
$89B
| $865K | ﹤0.01% |
8,632
-23,978
| -74% | -$2.45M |
|
2604
CALL
Teradata
TDC
$2.68B
| $865K | ﹤0.01% |
25,700
+4,900
| +24% | +$158K |
|
2605
CALL
Kodiak Sciences
KOD
$2.59B
| $864K | ﹤0.01% |
120,700
-117,700
| -49% | -$845K |
|
2606
PUT
Kulicke & Soffa
KLIC
$5.3B
| $863K | ﹤0.01% |
19,500
+200
| +1% | +$8.79K |
|
2607
GoPro
GPRO
$116M
| $862K | ﹤0.01% |
173,238
-28,793
| -14% | -$151K |
|
2608
PUT
United Therapeutics
UTHR
$26.3B
| $862K | ﹤0.01% |
3,100
-11,700
| -79% | -$2.95M |
|
2609
CALL
Globalstar
GSAT
$10.2B
| $861K | ﹤0.01% |
43,180
-27,247
| -39% | -$716K |
|
2610
PUT
Unum
UNM
$13.8B
| $861K | ﹤0.01% |
21,000
+5,100
| +32% | +$214K |
|
|
CD
2611
CALL
DELISTED
Chindata Group Holdings Limited American Depositary Shares
CD
| $861K | ﹤0.01% |
108,100
-9,100
| -8% | -$63.7K |
|
2612
PUT
Marqeta
MQ
$1.8B
| $859K | ﹤0.01% |
35,175
-49,575
| -58% | -$1.35M |
|
|
NVMI
2613
Nova
NVMI
$13.9B
| $859K | ﹤0.01% |
10,521
-19,871
| -65% | -$1.62M |
|
|
BHIL
2614
CALL
DELISTED
Benson Hill, Inc.
BHIL
| $859K | ﹤0.01% |
9,634
+3,300
| +52% | +$323K |
|
|
HIBB
2615
CALL
DELISTED
Hibbett, Inc. Common Stock
HIBB
| $859K | ﹤0.01% |
12,600
-42,000
| -77% | -$2.62M |
|
|
SWTX
2616
CALL
DELISTED
SpringWorks Therapeutics
SWTX
| $858K | ﹤0.01% |
33,000
-12,200
| -27% | -$301K |
|
2617
PUT
Vermilion Energy
VET
$1.73B
| $858K | ﹤0.01% |
48,500
-45,000
| -48% | -$914K |
|
2618
CALL
Vulcan Materials
VMC
$36.3B
| $858K | ﹤0.01% |
4,900
-4,500
| -48% | -$769K |
|
2619
PUT
Organon & Co
OGN
$3.55B
| $857K | ﹤0.01% |
30,700
-500
| -2% | -$12.8K |
|
|
SUMO
2620
CALL
DELISTED
Sumo Logic, Inc. Common Stock
SUMO
| $857K | ﹤0.01% |
105,900
-21,300
| -17% | -$162K |
|
2621
Gen Digital
GEN
$15.6B
| $856K | ﹤0.01% |
39,963
-2,924
| -7% | -$64.6K |
|
|
PYCR
2622
PUT
DELISTED
Paycor HCM, Inc. Common Stock
PYCR
| $856K | ﹤0.01% |
35,000
+33,800
| +2,817% | +$936K |
|
2623
PUT
Children's Place
PLCE
$53.6M
| $855K | ﹤0.01% |
23,500
-1,100
| -4% | -$41.2K |
|
2624
CALL
Global E Online
GLBE
$6.08B
| $854K | ﹤0.01% |
41,400
-42,900
| -51% | -$974K |
|
|
TIGR
2625
PUT
UP Fintech Holding
TIGR
$845M
| $854K | ﹤0.01% |
250,700
+106,000
| +73% | +$459K |
|
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.