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
|
+$168M |
| 2 |
NVIDIA
NVDA
|
+$141M |
| 3 |
TSMC
TSM
|
+$121M |
| 4 |
Meta Platforms (Facebook)
META
|
+$107M |
| 5 |
SPDR Gold Trust
GLD
|
+$103M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$174M |
| 2 |
Western Digital
WDC
|
+$87.7M |
| 3 |
Broadcom
AVGO
|
+$62.2M |
| 4 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$52M |
| 5 |
Netflix
NFLX
|
+$44.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.62% |
| 2 | Communication Services | 0.22% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Healthcare | 0.2% |
| 5 | Industrials | 0.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1901
Wells Fargo
WFC
$261B
| $1.83M | ﹤0.01% |
+22,945
| New | +$1.97M |
|
1902
CALL
Amer Sports
AS
$19.7B
| $1.82M | ﹤0.01% |
55,400
+52,200
| +1,631% | +$1.91M |
|
1903
CALL
ZIM Integrated Shipping Services
ZIM
$3B
| $1.82M | ﹤0.01% |
+69,000
| New | +$1.72M |
|
1904
PUT
Boston Properties
BXP
$11B
| $1.82M | ﹤0.01% |
35,000
+22,200
| +173% | +$1.34M |
|
|
FRMI
1905
PUT
Fermi Inc
FRMI
$4.72B
| $1.81M | ﹤0.01% |
310,600
-246,100
| -44% | -$2.15M |
|
1906
Teladoc Health
TDOC
$1.58B
| $1.81M | ﹤0.01% |
332,811
+101,131
| +44% | +$567K |
|
1907
JD.com
JD
$40.8B
| $1.81M | ﹤0.01% |
61,230
-226,778
| -79% | -$6.41M |
|
1908
PUT
Guardant Health
GH
$19.5B
| $1.81M | ﹤0.01% |
19,600
+2,700
| +16% | +$271K |
|
1909
PUT
Skyworks Solutions
SWKS
$9.06B
| $1.81M | ﹤0.01% |
33,800
-96,500
| -74% | -$5.62M |
|
1910
CALL
Cintas
CTAS
$82.4B
| $1.81M | ﹤0.01% |
10,700
-23,800
| -69% | -$4.56M |
|
1911
CALL
Howard Hughes
HHH
$3.93B
| $1.81M | ﹤0.01% |
28,600
+20,500
| +253% | +$1.54M |
|
1912
CALL
Entergy
ETR
$54.1B
| $1.81M | ﹤0.01% |
16,100
+1,100
| +7% | +$111K |
|
1913
CALL
Kodak
KODK
$806M
| $1.81M | ﹤0.01% |
199,800
+20,500
| +11% | +$156K |
|
|
BULL
1914
PUT
Webull Corp
BULL
$3.98B
| $1.81M | ﹤0.01% |
376,700
-167,400
| -31% | -$1.08M |
|
1915
Direxion Daily Gold Miners Index Bull 2X ETF
NUGT
$875M
| $1.8M | ﹤0.01% |
9,576
+7,993
| +505% | +$1.86M |
|
1916
PUT
Darling Ingredients
DAR
$9.93B
| $1.8M | ﹤0.01% |
29,100
-9,300
| -24% | -$458K |
|
1917
CALL
Nasdaq
NDAQ
$51.5B
| $1.8M | ﹤0.01% |
21,200
+3,500
| +20% | +$314K |
|
|
CMPS
1918
PUT
Compass Pathways
CMPS
$1.52B
| $1.8M | ﹤0.01% |
325,100
+303,400
| +1,398% | +$2.04M |
|
|
RZLV
1919
CALL
Rezolve AI
RZLV
$893M
| $1.8M | ﹤0.01% |
702,100
-104,700
| -13% | -$295K |
|
1920
Whirlpool
WHR
$2.42B
| $1.79M | ﹤0.01% |
33,281
+24,428
| +276% | +$1.79M |
|
|
QXO
1921
PUT
QXO Inc
QXO
$14.2B
| $1.79M | ﹤0.01% |
92,300
+25,200
| +38% | +$577K |
|
1922
Direxion Daily Financial Bull 3x ETF
FAS
$2.36B
| $1.79M | ﹤0.01% |
+15,123
| New | +$2.16M |
|
|
MESO
1923
CALL
Mesoblast
MESO
$1.99B
| $1.79M | ﹤0.01% |
116,500
-33,800
| -22% | -$563K |
|
|
TLN
1924
PUT
Talen Energy Corp
TLN
$17.2B
| $1.79M | ﹤0.01% |
5,600
-22,500
| -80% | -$7.94M |
|
1925
CALL
Cogent Biosciences
COGT
$6.79B
| $1.79M | ﹤0.01% |
46,400
-26,900
| -37% | -$993K |
|
Similar funds
Simplex Trading's Q1 2026 Portfolio in Review
As of Q1 2026, Simplex Trading held 10,500 positions worth $149B, down 16% from $177B the previous quarter. Its ten largest holdings account for 51% of the portfolio.
Simplex Trading withdrew a net $18.1B in Q1 2026, closing 1,574 positions and reducing 3,926 holdings. Its most notable exit was Direxion Daily Semiconductor Bull 3X ETF, an estimated $52M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.62% of assets, up from 0.59% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amazon worth $159M.
- Simplex Trading's largest Q1 2026 buy was Amazon: 764,884 shares worth $159M.
- Simplex Trading added most to NVIDIA in Q1 2026, an estimated $141M increase.
- Simplex Trading's biggest Q1 2026 reduction was Apple, cutting an estimated $174M.
- Simplex Trading fully exited Direxion Daily Semiconductor Bull 3X ETF in Q1 2026, selling an estimated $52M.
- Simplex Trading's ten largest holdings make up 51% of its $149B portfolio in Q1 2026.
- Simplex Trading opened 2,156 new positions and closed 1,574 in Q1 2026.
- Simplex Trading's portfolio value fell 16% quarter-over-quarter to $149B.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.