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 | |
|---|---|---|---|---|---|---|
|
SJT
2776
CALL
San Juan Basin Royalty Trust
SJT
$117M
| $736K | ﹤0.01% |
64,500
-135,700
| -68% | -$1.49M |
|
2777
PUT
Viridian Therapeutics
VRDN
$2.13B
| $736K | ﹤0.01% |
25,200
+23,600
| +1,475% | +$544K |
|
2778
Ares Management
ARES
$28.5B
| $734K | ﹤0.01% |
10,730
+7,831
| +270% | +$565K |
|
2779
PUT
Sprott Uranium Miners ETF
URNM
$1.78B
| $733K | ﹤0.01% |
23,100
-5,100
| -18% | -$166K |
|
2780
CALL
WEC Energy
WEC
$37.7B
| $731K | ﹤0.01% |
7,800
-31,300
| -80% | -$2.89M |
|
2781
PUT
Aldeyra Therapeutics
ALDX
$91.7M
| $730K | ﹤0.01% |
104,900
+96,200
| +1,106% | +$550K |
|
2782
PUT
Inspire Medical Systems
INSP
$1.42B
| $730K | ﹤0.01% |
2,900
-2,000
| -41% | -$426K |
|
2783
CALL
Rocket Lab Corp
RKLB
$39.9B
| $729K | ﹤0.01% |
193,500
+85,500
| +79% | +$373K |
|
|
SF
2784
CALL
Stifel
SF
$12.3B
| $729K | ﹤0.01% |
18,750
+12,900
| +221% | +$510K |
|
2785
VanEck High Yield Muni ETF
HYD
$4.44B
| $728K | ﹤0.01% |
+14,420
| New | +$729K |
|
2786
PUT
Graphic Packaging
GPK
$3.26B
| $727K | ﹤0.01% |
32,700
-54,500
| -63% | -$1.2M |
|
2787
PUT
On Holding
ONON
$11.9B
| $727K | ﹤0.01% |
42,400
-178,000
| -81% | -$3.11M |
|
|
CGC
2788
PUT
Canopy Growth
CGC
$375M
| $726K | ﹤0.01% |
31,470
-21,810
| -41% | -$673K |
|
2789
PUT
SL Green Realty
SLG
$3.88B
| $726K | ﹤0.01% |
22,100
-7,800
| -26% | -$297K |
|
|
WCC
2790
PUT
WESCO International
WCC
$16.2B
| $726K | ﹤0.01% |
5,800
-24,800
| -81% | -$3.12M |
|
2791
CALL
SurgePays
SURG
$6.05M
| $725K | ﹤0.01% |
110,600
+79,600
| +257% | +$481K |
|
|
FRG
2792
CALL
DELISTED
Franchise Group, Inc.
FRG
| $724K | ﹤0.01% |
30,400
+23,000
| +311% | +$600K |
|
2793
Carriage Services
CSV
$618M
| $723K | ﹤0.01% |
26,263
+21,418
| +442% | +$582K |
|
2794
Sociedad Química y Minera de Chile
SQM
$19.6B
| $723K | ﹤0.01% |
9,057
+973
| +12% | +$90K |
|
|
MYOV
2795
PUT
DELISTED
Myovant Sciences Ltd.
MYOV
| $722K | ﹤0.01% |
26,800
-19,000
| -41% | -$500K |
|
2796
PUT
Group 1 Automotive
GPI
$3.94B
| $721K | ﹤0.01% |
4,000
+3,100
| +344% | +$545K |
|
2797
PUT
iRhythm Holdings
IRTC
$3.59B
| $721K | ﹤0.01% |
7,700
+5,500
| +250% | +$599K |
|
2798
CALL
Principal Financial Group
PFG
$23.6B
| $721K | ﹤0.01% |
8,600
+1,100
| +15% | +$94.4K |
|
2799
CALL
Viper Energy
VNOM
$8.81B
| $721K | ﹤0.01% |
22,700
+5,100
| +29% | +$165K |
|
2800
CALL
Warby Parker
WRBY
$3.01B
| $720K | ﹤0.01% |
53,400
-45,600
| -46% | -$697K |
|
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.