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 | |
|---|---|---|---|---|---|---|
1351
PUT
Schwab US Broad Market ETF
SCHB
$42.8B
| $4.03M | ﹤0.01% |
169,500
+47,100
| +38% | +$708K |
|
1352
CALL
Textron
TXT
$16.6B
| $4.02M | ﹤0.01% |
56,800
+50,400
| +788% | +$3.42M |
|
1353
CALL
Williams Companies
WMB
$90.5B
| $4.01M | ﹤0.01% |
121,900
-132,000
| -52% | -$4.3M |
|
1354
PUT
Cognizant
CTSH
$21.5B
| $4.01M | ﹤0.01% |
70,100
-10,300
| -13% | -$604K |
|
1355
CALL
Hormel Foods
HRL
$13.9B
| $4.01M | ﹤0.01% |
88,000
+71,300
| +427% | +$3.32M |
|
1356
PUT
Winnebago Industries
WGO
$870M
| $4M | ﹤0.01% |
76,000
+17,300
| +29% | +$984K |
|
1357
Peabody Energy
BTU
$2.78B
| $4M | ﹤0.01% |
151,431
+106,696
| +239% | +$2.93M |
|
|
IAA
1358
CALL
DELISTED
IAA, Inc. Common Stock
IAA
| $3.97M | ﹤0.01% |
99,300
-215,500
| -68% | -$8.13M |
|
1359
PUT
Vodafone
VOD
$34.9B
| $3.97M | ﹤0.01% |
392,100
-149,300
| -28% | -$1.68M |
|
|
JKS
1360
PUT
JinkoSolar
JKS
$776M
| $3.95M | ﹤0.01% |
96,700
-30,400
| -24% | -$1.46M |
|
1361
PUT
Stanley Black & Decker
SWK
$14.2B
| $3.95M | ﹤0.01% |
52,600
+8,800
| +20% | +$687K |
|
1362
CALL
Royalty Pharma
RPRX
$26.1B
| $3.95M | ﹤0.01% |
99,900
-33,400
| -25% | -$1.39M |
|
|
CFLT
1363
PUT
DELISTED
Confluent
CFLT
| $3.95M | ﹤0.01% |
177,500
+50,300
| +40% | +$1.17M |
|
1364
CALL
Digital Turbine
APPS
$1.02B
| $3.94M | ﹤0.01% |
258,800
+77,500
| +43% | +$1.19M |
|
1365
CALL
Louisiana-Pacific
LPX
$5.21B
| $3.93M | ﹤0.01% |
66,400
+45,700
| +221% | +$2.69M |
|
1366
CALL
Kymera Therapeutics
KYMR
$9.08B
| $3.93M | ﹤0.01% |
157,300
+154,300
| +5,143% | +$4.11M |
|
1367
CALL
iShares Convertible Bond ETF
ICVT
$7.22B
| $3.92M | ﹤0.01% |
132,800
-87,800
| -40% | -$6.18M |
|
1368
CALL
Takeda Pharmaceutical
TAK
$55.1B
| $3.91M | ﹤0.01% |
250,800
+24,800
| +11% | +$346K |
|
1369
CALL
Blink Charging
BLNK
$75.3M
| $3.91M | ﹤0.01% |
356,400
+237,200
| +199% | +$3.23M |
|
|
BIG
1370
PUT
DELISTED
Big Lots, Inc.
BIG
| $3.91M | ﹤0.01% |
265,800
+176,600
| +198% | +$3.04M |
|
1371
CALL
Chegg
CHGG
$108M
| $3.9M | ﹤0.01% |
154,400
+6,400
| +4% | +$163K |
|
|
CPE
1372
PUT
DELISTED
Callon Petroleum Company
CPE
| $3.9M | ﹤0.01% |
105,200
-62,100
| -37% | -$2.55M |
|
1373
CALL
Chemours
CC
$2.59B
| $3.9M | ﹤0.01% |
127,400
+84,300
| +196% | +$2.53M |
|
1374
CALL
Sonos
SONO
$1.75B
| $3.89M | ﹤0.01% |
230,200
-12,800
| -5% | -$208K |
|
|
VMW
1375
CALL
DELISTED
VMware, Inc
VMW
| $3.88M | ﹤0.01% |
31,600
-37,400
| -54% | -$4.31M |
|
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.