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 | |
|---|---|---|---|---|---|---|
|
BERY
1776
CALL
DELISTED
Berry Global Group, Inc.
BERY
| $2.55M | ﹤0.01% |
43,233
+26,462
| +158% | +$1.45M |
|
|
AKRO
1777
PUT
DELISTED
Akero Therapeutics
AKRO
| $2.55M | ﹤0.01% |
54,700
+39,500
| +260% | +$1.81M |
|
1778
PUT
Cognizant
CTSH
$21.5B
| $2.55M | ﹤0.01% |
39,100
-65,800
| -63% | -$4.08M |
|
1779
Invesco NASDAQ 100 ETF
QQQM
$95.1B
| $2.55M | ﹤0.01% |
16,795
-30,694
| -65% | -$4.25M |
|
1780
PUT
Caleres
CAL
$396M
| $2.55M | ﹤0.01% |
106,600
+89,900
| +538% | +$2.01M |
|
1781
Pan American Silver
PAAS
$18.6B
| $2.55M | ﹤0.01% |
174,923
-110,919
| -39% | -$1.83M |
|
|
DENT
1782
CALL
DELISTED
AdvisorShares Dent Tactical ETF
DENT
| $2.54M | ﹤0.01% |
459,500
-163,500
| -26% | -$904K |
|
1783
Agilent Technologies
A
$39.1B
| $2.54M | ﹤0.01% |
+21,129
| New | +$2.69M |
|
1784
DigitalBridge
DBRG
$2.94B
| $2.54M | ﹤0.01% |
+172,701
| New | +$2.12M |
|
1785
PUT
Amplify Online Retail ETF
IBUY
$106M
| $2.54M | ﹤0.01% |
111,300
+47,200
| +74% | +$2.01M |
|
1786
Arcus Biosciences
RCUS
$3.57B
| $2.53M | ﹤0.01% |
124,541
+115,943
| +1,348% | +$2.21M |
|
1787
Accenture
ACN
$89.9B
| $2.53M | ﹤0.01% |
8,194
-42,885
| -84% | -$12.5M |
|
|
CFLT
1788
DELISTED
Confluent
CFLT
| $2.52M | ﹤0.01% |
+71,250
| New | +$1.99M |
|
1789
Rivian
RIVN
$22.9B
| $2.51M | ﹤0.01% |
+150,885
| New | +$2.11M |
|
1790
PUT
TG Therapeutics
TGTX
$8.58B
| $2.51M | ﹤0.01% |
101,200
+47,900
| +90% | +$1.24M |
|
1791
PUT
Payoneer
PAYO
$2.41B
| $2.51M | ﹤0.01% |
522,100
+13,300
| +3% | +$66.5K |
|
1792
Zillow
Z
$7.04B
| $2.51M | ﹤0.01% |
49,961
+43,962
| +733% | +$2.02M |
|
1793
CALL
VeriSign
VRSN
$25.3B
| $2.51M | ﹤0.01% |
11,100
-31,900
| -74% | -$7.03M |
|
1794
CALL
AES
AES
$10.6B
| $2.51M | ﹤0.01% |
120,900
+73,400
| +155% | +$1.62M |
|
|
SPWR
1795
CALL
DELISTED
SunPower Corporation Common Stock
SPWR
| $2.51M | ﹤0.01% |
255,800
-53,600
| -17% | -$626K |
|
1796
CALL
Northern Trust
NTRS
$22.2B
| $2.5M | ﹤0.01% |
33,800
+24,500
| +263% | +$1.88M |
|
1797
PUT
Iridium Communications
IRDM
$4.85B
| $2.5M | ﹤0.01% |
40,300
+8,900
| +28% | +$551K |
|
1798
CALL
Sana Biotechnology
SANA
$885M
| $2.5M | ﹤0.01% |
419,400
+417,900
| +27,860% | +$2.41M |
|
1799
PUT
KKR & Co
KKR
$89.2B
| $2.5M | ﹤0.01% |
44,600
-175,300
| -80% | -$9.18M |
|
1800
CALL
Crown Holdings
CCK
$12.8B
| $2.49M | ﹤0.01% |
28,700
-11,700
| -29% | -$963K |
|
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.