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 | |
|---|---|---|---|---|---|---|
1926
CALL
PagSeguro Digital
PAGS
$2.57B
| $2.14M | ﹤0.01% |
226,500
+79,000
| +54% | +$801K |
|
|
SWAV
1927
DELISTED
Shockwave Medical, Inc. Common Stock
SWAV
| $2.14M | ﹤0.01% |
+7,493
| New | +$2.08M |
|
1928
CALL
Invesco CurrencyShares Japanese Yen Trust
FXY
$423M
| $2.14M | ﹤0.01% |
33,100
-7,000
| -17% | -$474K |
|
1929
CALL
Stem
STEM
$49.2M
| $2.14M | ﹤0.01% |
18,675
+3,730
| +25% | +$370K |
|
1930
CALL
Melco Resorts & Entertainment
MLCO
$2.1B
| $2.13M | ﹤0.01% |
174,600
-306,600
| -64% | -$3.79M |
|
1931
CALL
Agilon Health
AGL
$1.64B
| $2.13M | ﹤0.01% |
4,912
-3,088
| -39% | -$1.74M |
|
|
EMBJ
1932
PUT
Embraer S.A. ADS
EMBJ
$11.6B
| $2.13M | ﹤0.01% |
137,700
-31,800
| -19% | -$485K |
|
|
VMW
1933
CALL
DELISTED
VMware, Inc
VMW
| $2.13M | ﹤0.01% |
14,800
-28,700
| -66% | -$3.72M |
|
|
PR
1934
PUT
Permian Resources
PR
$17.9B
| $2.12M | ﹤0.01% |
193,700
-2,900
| -1% | -$29.7K |
|
|
BPMC
1935
PUT
DELISTED
Blueprint Medicines
BPMC
| $2.12M | ﹤0.01% |
33,500
+20,300
| +154% | +$1.1M |
|
1936
CALL
Weyerhaeuser
WY
$17.3B
| $2.12M | ﹤0.01% |
63,200
-24,600
| -28% | -$741K |
|
1937
nVent Electric
NVT
$24.5B
| $2.11M | ﹤0.01% |
+40,888
| New | +$1.82M |
|
1938
CALL
J.M. Smucker
SJM
$12.6B
| $2.11M | ﹤0.01% |
14,300
+4,900
| +52% | +$747K |
|
1939
PUT
ALPS REIT Dividend Dogs ETF
RDOG
$11.6M
| $2.11M | ﹤0.01% |
53,800
-18,600
| -26% | -$651K |
|
1940
CALL
HEICO Corp Class A
HEI.A
$35.4B
| $2.1M | ﹤0.01% |
11,900
+9,200
| +341% | +$1.23M |
|
1941
PUT
C.H. Robinson
CHRW
$22B
| $2.1M | ﹤0.01% |
22,300
-36,500
| -62% | -$3.53M |
|
1942
PUT
Matador Resources
MTDR
$6.31B
| $2.1M | ﹤0.01% |
40,100
+4,700
| +13% | +$227K |
|
1943
CALL
Dave & Buster's
PLAY
$343M
| $2.09M | ﹤0.01% |
47,000
+21,400
| +84% | +$782K |
|
1944
CALL
BlackBerry
BB
$5.01B
| $2.09M | ﹤0.01% |
378,600
-17,800
| -4% | -$86.2K |
|
1945
CALL
Globant
GLOB
$1.35B
| $2.08M | ﹤0.01% |
11,600
+9,300
| +404% | +$1.53M |
|
1946
Keurig Dr Pepper
KDP
$40.4B
| $2.08M | ﹤0.01% |
66,649
+48,095
| +259% | +$1.58M |
|
1947
PUT
Navios Maritime Partners
NMM
$2.25B
| $2.08M | ﹤0.01% |
95,400
-15,800
| -14% | -$350K |
|
1948
PUT
Cinemark Holdings
CNK
$3.82B
| $2.08M | ﹤0.01% |
126,100
-103,600
| -45% | -$1.72M |
|
1949
PUT
Monster Beverage
MNST
$91.4B
| $2.08M | ﹤0.01% |
36,200
-70,300
| -66% | -$4M |
|
|
ETNB
1950
PUT
DELISTED
89bio
ETNB
| $2.08M | ﹤0.01% |
109,700
-47,600
| -30% | -$836K |
|
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.