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 | |
|---|---|---|---|---|---|---|
1101
Wheaton Precious Metals
WPM
$50B
| $6.18M | 0.01% |
158,248
-7,694
| -5% | -$278K |
|
|
GTM
1102
CALL
ZoomInfo Technologies
GTM
$849M
| $6.18M | 0.01% |
205,300
+123,800
| +152% | +$4.27M |
|
1103
CALL
United States Natural Gas Fund
UNG
$473M
| $6.16M | 0.01% |
109,250
-16,500
| -13% | -$1.31M |
|
|
FLNA
1104
PUT
Filana Therapeutics
FLNA
$45M
| $6.14M | 0.01% |
208,000
-122,100
| -37% | -$4.39M |
|
1105
CALL
NetApp
NTAP
$32.3B
| $6.14M | 0.01% |
102,200
+82,500
| +419% | +$5.47M |
|
1106
CALL
QuidelOrtho
QDEL
$1.13B
| $6.13M | 0.01% |
71,600
+38,200
| +114% | +$3.24M |
|
|
1107
PUT
United States Natural Gas Fund
UNG
$473M
| $6.13M | 0.01% |
108,650
-8,675
| -7% | -$689K |
|
1108
CALL
Canadian Solar
CSIQ
$997M
| $6.12M | 0.01% |
198,200
-79,500
| -29% | -$2.67M |
|
1109
PUT
Carvana
CVNA
$43.1B
| $6.12M | 0.01% |
6,456,000
+4,367,000
| +209% | +$9.22M |
|
1110
PUT
ALPS REIT Dividend Dogs ETF
RDOG
$11.4M
| $6.12M | 0.01% |
160,700
+18,700
| +13% | +$730K |
|
1111
CALL
Allstate
ALL
$65.5B
| $6.1M | 0.01% |
45,000
-7,800
| -15% | -$1.02M |
|
1112
CALL
Stanley Black & Decker
SWK
$13.6B
| $6.09M | 0.01% |
81,100
-11,500
| -12% | -$898K |
|
1113
CALL
Copart
CPRT
$25.2B
| $6.08M | 0.01% |
199,600
+10,800
| +6% | +$323K |
|
1114
PUT
Mettler-Toledo International
MTD
$26.9B
| $6.07M | 0.01% |
4,200
+1,200
| +40% | +$1.61M |
|
|
TYNS
1115
CALL
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $6.07M | 0.01% |
82,000
-28,700
| -26% | -$2.12M |
|
1116
PUT
Interactive Brokers
IBKR
$40.9B
| $6.05M | 0.01% |
334,800
+306,400
| +1,079% | +$5.72M |
|
|
CNR
1117
CALL
Core Natural Resources Inc
CNR
$4.36B
| $6.04M | 0.01% |
93,000
+24,800
| +36% | +$1.67M |
|
1118
PUT
Whirlpool
WHR
$2.31B
| $6.04M | 0.01% |
42,700
-50,500
| -54% | -$7.18M |
|
1119
PUT
VICI Properties
VICI
$29B
| $6.02M | 0.01% |
185,700
+14,800
| +9% | +$475K |
|
1120
PUT
Bio-Rad Laboratories Class A
BIO
$8.47B
| $6.01M | 0.01% |
14,300
-5,300
| -27% | -$2.14M |
|
|
1121
CALL
Interactive Brokers
IBKR
$40.9B
| $6.01M | 0.01% |
332,400
+231,600
| +230% | +$4.33M |
|
1122
CALL
W.W. Grainger
GWW
$64.6B
| $6.01M | 0.01% |
10,800
+10,300
| +2,060% | +$5.81M |
|
1123
CALL
Yum China
YUMC
$14.8B
| $6M | 0.01% |
109,700
-42,200
| -28% | -$2.15M |
|
1124
CALL
Teva Pharmaceuticals
TEVA
$36.3B
| $5.99M | 0.01% |
656,800
-225,500
| -26% | -$1.97M |
|
1125
CALL
Plains All American Pipeline
PAA
$17.4B
| $5.96M | 0.01% |
507,300
+311,300
| +159% | +$3.69M |
|
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.