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 | |
|---|---|---|---|---|---|---|
2976
PUT
Dentsply Sirona
XRAY
$2.61B
| $604K | ﹤0.01% |
19,000
+14,200
| +296% | +$428K |
|
2977
PUT
BlackBerry
BB
$4.93B
| $603K | ﹤0.01% |
185,200
-284,700
| -61% | -$1.26M |
|
2978
CALL
BridgeBio Pharma
BBIO
$16.5B
| $603K | ﹤0.01% |
79,200
+44,800
| +130% | +$429K |
|
|
QLTB
2979
PUT
DELISTED
ISHARES BAA BA RATED CORP BOND FUND
QLTB
| $603K | ﹤0.01% |
6,100
-5,000
| -45% | -$494K |
|
|
GES
2980
PUT
DELISTED
Guess Inc
GES
| $602K | ﹤0.01% |
29,100
-28,900
| -50% | -$532K |
|
2981
CALL
Patterson-UTI
PTEN
$3.57B
| $602K | ﹤0.01% |
35,800
-5,200
| -13% | -$85.8K |
|
|
FRG
2982
PUT
DELISTED
Franchise Group, Inc.
FRG
| $602K | ﹤0.01% |
25,300
+5,000
| +25% | +$130K |
|
2983
PUT
Service Corp International
SCI
$11.4B
| $601K | ﹤0.01% |
8,700
+8,000
| +1,143% | +$533K |
|
2984
CALL
Fidelity National Financial
FNF
$14B
| $599K | ﹤0.01% |
23,700
-65,740
| -74% | -$2.47M |
|
2985
SLM Corp
SLM
$4.78B
| $599K | ﹤0.01% |
36,136
+9,123
| +34% | +$150K |
|
|
VTLE
2986
DELISTED
Vital Energy
VTLE
| $599K | ﹤0.01% |
11,663
-2,896
| -20% | -$179K |
|
2987
PUT
Allegiant Air
ALGT
$2.66B
| $598K | ﹤0.01% |
8,800
+2,300
| +35% | +$168K |
|
|
MTLS
2988
PUT
Materialise
MTLS
$373M
| $598K | ﹤0.01% |
68,000
+55,000
| +423% | +$544K |
|
|
RETA
2989
DELISTED
Reata Pharmaceuticals, Inc. Class A Common Stock
RETA
| $598K | ﹤0.01% |
15,750
+2,700
| +21% | +$92.9K |
|
2990
PUT
Kimbell Royalty Partners
KRP
$1.45B
| $597K | ﹤0.01% |
35,800
+12,900
| +56% | +$227K |
|
|
TELL
2991
DELISTED
Tellurian Inc.
TELL
| $597K | ﹤0.01% |
355,629
-25,468
| -7% | -$63.8K |
|
2992
iShares MSCI Turkey ETF
TUR
$203M
| $596K | ﹤0.01% |
+16,127
| New | +$494K |
|
|
GRIN
2993
PUT
DELISTED
Grindrod Shipping Holdings Ltd. Ordinary Shares
GRIN
| $594K | ﹤0.01% |
31,800
-50,200
| -61% | -$1.19M |
|
2994
Equity Residential
EQR
$25.2B
| $593K | ﹤0.01% |
10,060
+4,153
| +70% | +$260K |
|
2995
CALL
Companhia Siderúrgica Nacional
SID
$1.49B
| $593K | ﹤0.01% |
215,000
-5,500
| -2% | -$14.8K |
|
2996
CALL
Butterfly Network
BFLY
$1.85B
| $592K | ﹤0.01% |
241,000
+70,600
| +41% | +$253K |
|
2997
Roper Technologies
ROP
$37.1B
| $592K | ﹤0.01% |
+1,371
| New | +$565K |
|
2998
CALL
Arch Capital
ACGL
$36.3B
| $590K | ﹤0.01% |
9,400
+3,200
| +52% | +$179K |
|
2999
Calumet Specialty Products
CLMT
$3.6B
| $590K | ﹤0.01% |
35,006
-21,061
| -38% | -$340K |
|
|
SUM
3000
CALL
DELISTED
Summit Materials, Inc. Class A Common Stock
SUM
| $590K | ﹤0.01% |
20,800
-12,354
| -37% | -$340K |
|
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.