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 |
Microsoft
MSFT
|
+$53.9M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.9M |
| 3 |
NVIDIA
NVDA
|
+$47.1M |
| 4 |
PayPal
PYPL
|
+$41.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$28.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$51.4M |
| 2 |
Walmart Inc
WMT
|
+$46.4M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
Adobe
ADBE
|
+$33.5M |
| 5 |
Starbucks
SBUX
|
+$26.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.41% |
| 2 | Healthcare | 0.21% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Communication Services | 0.2% |
| 5 | Financials | 0.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1001
CALL
British American Tobacco
BTI
$129B
| $8.38M | 0.01% |
252,300
+188,600
| +296% | +$6.45M |
|
1002
PUT
BJs Wholesale Club
BJ
$11.7B
| $8.37M | 0.01% |
132,900
+900
| +0.7% | +$62.2K |
|
1003
PUT
American Electric Power
AEP
$73.4B
| $8.35M | 0.01% |
99,200
-21,300
| -18% | -$1.88M |
|
1004
CALL
Schwab US Broad Market ETF
SCHB
$42.7B
| $8.34M | 0.01% |
351,000
+18,300
| +6% | +$298K |
|
1005
PUT
Hilton Worldwide
HLT
$72.9B
| $8.32M | 0.01% |
57,200
+7,300
| +15% | +$1.04M |
|
1006
PUT
Goodyear
GT
$2.02B
| $8.32M | 0.01% |
608,000
+98,300
| +19% | +$1.23M |
|
|
TWO
1007
CALL
Two Harbors Investment
TWO
$1.27B
| $8.31M | 0.01% |
599,000
-37,200
| -6% | -$491K |
|
1008
PUT
Mobileye
MBLY
$6.29B
| $8.31M | 0.01% |
216,200
+98,300
| +83% | +$3.99M |
|
1009
CALL
Williams-Sonoma
WSM
$25.7B
| $8.3M | 0.01% |
132,600
-145,800
| -52% | -$8.69M |
|
1010
PUT
Archer Daniels Midland
ADM
$41.6B
| $8.26M | 0.01% |
109,300
+35,100
| +47% | +$2.66M |
|
1011
PUT
Cboe Global Markets
CBOE
$29.8B
| $8.25M | 0.01% |
59,800
+29,100
| +95% | +$3.97M |
|
1012
CALL
BioMarin Pharmaceuticals
BMRN
$11.4B
| $8.22M | 0.01% |
94,900
+45,700
| +93% | +$4.3M |
|
1013
CALL
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$107M
| $8.21M | 0.01% |
306,900
-243,600
| -44% | -$5.47M |
|
1014
American Express
AXP
$233B
| $8.21M | 0.01% |
47,132
+22,760
| +93% | +$3.67M |
|
1015
PUT
United States Natural Gas Fund
UNG
$473M
| $8.21M | 0.01% |
276,550
-90,600
| -25% | -$2.45M |
|
1016
CALL
Wingstop
WING
$3.67B
| $8.21M | 0.01% |
41,000
+18,100
| +79% | +$3.54M |
|
1017
PUT
Franco-Nevada
FNV
$41.3B
| $8.19M | 0.01% |
57,400
-14,100
| -20% | -$2.12M |
|
1018
CALL
Aon
AON
$76B
| $8.18M | 0.01% |
23,700
-77,800
| -77% | -$25.3M |
|
1019
PUT
Alliant Energy
LNT
$19.2B
| $8.16M | 0.01% |
155,600
-13,400
| -8% | -$718K |
|
1020
CALL
Arthur J. Gallagher & Co
AJG
$62.2B
| $8.12M | 0.01% |
37,000
+5,000
| +16% | +$1.04M |
|
1021
CALL
Five Below
FIVE
$11.1B
| $8.12M | 0.01% |
41,300
+15,700
| +61% | +$3.07M |
|
1022
PUT
Qorvo
QRVO
$7.65B
| $8.11M | 0.01% |
79,500
+50,200
| +171% | +$4.82M |
|
|
JWN
1023
PUT
DELISTED
Nordstrom
JWN
| $8.05M | 0.01% |
393,400
-41,200
| -9% | -$693K |
|
1024
PUT
TransDigm Group
TDG
$67.9B
| $8.05M | 0.01% |
9,000
-200
| -2% | -$158K |
|
1025
CALL
Capri Holdings
CPRI
$1.78B
| $8.04M | 0.01% |
224,100
-40,200
| -15% | -$1.59M |
|
Similar funds
Simplex Trading's Q2 2023 Portfolio in Review
As of Q2 2023, Simplex Trading held 10,535 positions worth $122B, up 6.9% from $114B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q2 2023 filing shows 1,474 new, 3,350 increased, 3,913 reduced and 1,517 closed positions. Its largest new stake was Microsoft: 171,935 shares worth $58.5M. The largest sale was Apple, an estimated $51.4M.
By sector, the portfolio is most concentrated in Technology at 0.41% of assets, down from 0.42% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q2 2023 buy was Microsoft: 171,935 shares worth $58.5M.
- Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q2 2023, an estimated $52.9M increase.
- Simplex Trading's biggest Q2 2023 reduction was Adobe, cutting an estimated $33.5M.
- Simplex Trading fully exited Apple in Q2 2023, selling an estimated $51.4M.
- Simplex Trading's ten largest holdings make up 43% of its $122B portfolio in Q2 2023.
- Simplex Trading opened 1,474 new positions and closed 1,517 in Q2 2023.
- Simplex Trading's portfolio value rose 6.9% quarter-over-quarter to $122B.
Based on Simplex Trading's 13F filing for Q2 2023, filed 4 Aug 2023.