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 |
Apple
AAPL
|
+$552M |
| 2 |
Strategy Inc
MSTR
|
+$85.8M |
| 3 |
MSTX
Defiance Daily Target 2x Long MSTR ETF
MSTX
|
+$48.1M |
| 4 |
Intel
INTC
|
+$45.4M |
| 5 |
Uber
UBER
|
+$43M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$133M |
| 2 |
Pinduoduo
PDD
|
+$82.6M |
| 3 |
Boeing
BA
|
+$49.8M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$45.1M |
| 5 |
Microsoft
MSFT
|
+$41M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.68% |
| 2 | Consumer Discretionary | 0.23% |
| 3 | Healthcare | 0.19% |
| 4 | Financials | 0.13% |
| 5 | Communication Services | 0.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
751
PUT
AstraZeneca
AZN
$261B
| $16.2M | 0.01% |
123,650
+37,850
| +44% | +$5.3M |
|
752
CALL
Regeneron Pharmaceuticals
REGN
$68.5B
| $16.2M | 0.01% |
22,700
-6,200
| -21% | -$5.2M |
|
753
CALL
Aon
AON
$75.4B
| $16.1M | 0.01% |
44,900
+12,500
| +39% | +$4.6M |
|
754
CALL
Carlyle Group
CG
$16.1B
| $16.1M | 0.01% |
317,900
+105,000
| +49% | +$5.32M |
|
|
FITB
755
PUT
Fifth Third Bancorp
FITB
$51.2B
| $16M | 0.01% |
378,800
+201,900
| +114% | +$9.06M |
|
756
CALL
Wheaton Precious Metals
WPM
$49.8B
| $16M | 0.01% |
284,300
-107,700
| -27% | -$6.67M |
|
757
CALL
Kenvue
KVUE
$36.3B
| $16M | 0.01% |
747,200
-81,500
| -10% | -$1.85M |
|
758
PUT
On Holding
ONON
$12B
| $15.9M | 0.01% |
291,000
-18,500
| -6% | -$980K |
|
759
PUT
NXP Semiconductors
NXPI
$69.3B
| $15.9M | 0.01% |
76,300
-5,000
| -6% | -$1.14M |
|
760
CALL
International Paper
IP
$20.3B
| $15.9M | 0.01% |
294,600
-74,900
| -20% | -$4.02M |
|
761
PUT
UiPath
PATH
$5.46B
| $15.8M | 0.01% |
1,243,700
+225,600
| +22% | +$2.98M |
|
762
PUT
Macy's
M
$6.16B
| $15.8M | 0.01% |
932,000
+264,000
| +40% | +$4.21M |
|
|
HUT
763
CALL
Hut 8
HUT
$13B
| $15.8M | 0.01% |
769,500
+256,900
| +50% | +$5.25M |
|
764
PUT
AGNC Investment
AGNC
$12.3B
| $15.7M | 0.01% |
1,703,700
-28,400
| -2% | -$277K |
|
765
CALL
XPeng
XPEV
$12B
| $15.7M | 0.01% |
1,326,300
+787,500
| +146% | +$9.74M |
|
766
Unity
U
$12.3B
| $15.6M | 0.01% |
695,344
-11,007
| -2% | -$245K |
|
767
CALL
Best Buy
BBY
$18B
| $15.6M | 0.01% |
181,700
-284,800
| -61% | -$26M |
|
768
CALL
US Bancorp Series B Preferred Stock
USB.PRH
$745M
| $15.6M | 0.01% |
325,500
-199,700
| -38% | -$4.44M |
|
769
CALL
Lemonade
LMND
$4.7B
| $15.6M | 0.01% |
424,300
+212,300
| +100% | +$6.78M |
|
770
PUT
American Conservative Values ETF
ACVF
$149M
| $15.6M | 0.01% |
1,679,700
+1,605,200
| +2,155% | +$71.7M |
|
771
CALL
Welltower
WELL
$175B
| $15.5M | 0.01% |
123,100
-31,500
| -20% | -$4.13M |
|
772
CALL
General Mills
GIS
$19.3B
| $15.5M | 0.01% |
243,100
+76,700
| +46% | +$5.15M |
|
773
PUT
APA Corp
APA
$13.2B
| $15.5M | 0.01% |
671,200
+5,500
| +0.8% | +$129K |
|
774
CALL
SentinelOne
S
$6.05B
| $15.5M | 0.01% |
696,100
-403,200
| -37% | -$10.3M |
|
775
PUT
Ally Financial
ALLY
$13.2B
| $15.4M | 0.01% |
428,200
-57,000
| -12% | -$2.07M |
|
Similar funds
Simplex Trading's Q4 2024 Portfolio in Review
As of Q4 2024, Simplex Trading held 10,008 positions worth $179B, up 4.8% from $170B the previous quarter. Its ten largest holdings account for 49% of the portfolio.
Simplex Trading's Q4 2024 filing shows 1,520 new, 3,222 increased, 3,616 reduced and 1,504 closed positions. Its largest new stake was Strategy Inc: 285,022 shares worth $82.5M. The largest sale was NVIDIA, an estimated $133M.
By sector, the portfolio is most concentrated in Technology at 0.68% of assets, up from 0.4% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q4 2024 buy was Strategy Inc: 285,022 shares worth $82.5M.
- Simplex Trading added most to Apple in Q4 2024, an estimated $552M increase.
- Simplex Trading's biggest Q4 2024 reduction was NVIDIA, cutting an estimated $133M.
- Simplex Trading fully exited Pinduoduo in Q4 2024, selling an estimated $82.6M.
- Simplex Trading's ten largest holdings make up 49% of its $179B portfolio in Q4 2024.
- Simplex Trading opened 1,520 new positions and closed 1,504 in Q4 2024.
- Simplex Trading's portfolio value rose 4.8% quarter-over-quarter to $179B.
Based on Simplex Trading's 13F filing for Q4 2024, filed 11 Feb 2025.