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 | |
|---|---|---|---|---|---|---|
101
PUT
Costco
COST
$409B
| $131M | 0.14% |
287,900
-16,700
| -5% | -$8.16M |
|
102
PUT
IBM
IBM
$197B
| $131M | 0.14% |
989,300
+352,000
| +55% | +$48.6M |
|
|
103
CALL
IBM
IBM
$197B
| $129M | 0.14% |
1,061,600
-28,000
| -3% | -$3.86M |
|
104
CALL
Caterpillar
CAT
$415B
| $127M | 0.14% |
529,000
+79,000
| +18% | +$17.2M |
|
105
CALL
Starbucks
SBUX
$119B
| $126M | 0.14% |
1,268,600
-1,000
| -0.1% | -$94.4K |
|
|
106
PUT
Starbucks
SBUX
$119B
| $126M | 0.14% |
1,267,100
+357,700
| +39% | +$33.8M |
|
107
CALL
JD.com
JD
$40.9B
| $123M | 0.13% |
2,194,700
+821,800
| +60% | +$41.3M |
|
108
PUT
Cisco
CSCO
$445B
| $120M | 0.13% |
2,525,500
-133,600
| -5% | -$6.08M |
|
109
PUT
Enphase Energy
ENPH
$5.34B
| $120M | 0.13% |
453,200
+169,200
| +60% | +$49.2M |
|
110
PUT
Wells Fargo
WFC
$263B
| $119M | 0.13% |
2,884,000
+331,600
| +13% | +$14.7M |
|
111
CALL
Lockheed Martin
LMT
$119B
| $119M | 0.13% |
244,500
-10,400
| -4% | -$4.83M |
|
112
CALL
Morgan Stanley
MS
$344B
| $118M | 0.13% |
1,385,400
+286,900
| +26% | +$24.5M |
|
|
XYZ
113
PUT
Block Inc
XYZ
$46.3B
| $118M | 0.13% |
1,872,500
+7,400
| +0.4% | +$457K |
|
114
PUT
McDonald's
MCD
$188B
| $118M | 0.13% |
446,300
+37,500
| +9% | +$9.89M |
|
115
CALL
Chevron
CVX
$382B
| $117M | 0.13% |
652,800
-187,800
| -22% | -$32.8M |
|
116
CALL
CrowdStrike
CRWD
$191B
| $116M | 0.13% |
4,393,200
+2,706,400
| +160% | +$92.6M |
|
117
CALL
Lowe's Companies
LOW
$114B
| $115M | 0.13% |
576,500
+120,000
| +26% | +$24M |
|
118
PUT
Verizon
VZ
$185B
| $114M | 0.12% |
2,902,300
+1,061,300
| +58% | +$40M |
|
119
CALL
ConocoPhillips
COP
$144B
| $114M | 0.12% |
964,900
+443,900
| +85% | +$54M |
|
120
CALL
Merck
MRK
$316B
| $111M | 0.12% |
1,093,700
-255,200
| -19% | -$26.1M |
|
|
121
Invesco QQQ Trust
QQQ
$471B
| $111M | 0.12% |
417,448
+257,895
| +162% | +$71.3M |
|
122
PUT
Freeport-McMoran
FCX
$93B
| $110M | 0.12% |
2,888,700
-33,900
| -1% | -$1.18M |
|
|
KFYP
123
PUT
DELISTED
KraneShares CICC China Leaders 100 Index ETF
KFYP
| $109M | 0.12% |
3,592,700
+292,300
| +9% | +$6.64M |
|
124
CALL
Snowflake
SNOW
$92.8B
| $109M | 0.12% |
756,200
+307,400
| +68% | +$46.9M |
|
125
PUT
Visa
V
$676B
| $108M | 0.12% |
522,100
-127,100
| -20% | -$25.6M |
|
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.