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 | |
|---|---|---|---|---|---|---|
1201
PUT
Zeta Global
ZETA
$4.82B
| $7.47M | ﹤0.01% |
415,400
+271,000
| +188% | +$6.85M |
|
1202
ASML
ASML
$682B
| $7.47M | ﹤0.01% |
10,781
-6,317
| -37% | -$4.54M |
|
|
TIGR
1203
PUT
UP Fintech Holding
TIGR
$849M
| $7.46M | ﹤0.01% |
1,155,600
+513,100
| +80% | +$3.53M |
|
1204
CALL
Invesco DB US Dollar Index Bullish Fund
UUP
$434M
| $7.46M | ﹤0.01% |
374,600
-41,600
| -10% | -$1.23M |
|
1205
iShares MSCI China ETF
MCHI
$6.02B
| $7.43M | ﹤0.01% |
158,536
+6,184
| +4% | +$305K |
|
|
WCN
1206
PUT
Waste Connections
WCN
$42.6B
| $7.41M | ﹤0.01% |
43,200
+42,000
| +3,500% | +$7.63M |
|
1207
PUT
Canadian Natural Resources
CNQ
$98.4B
| $7.4M | ﹤0.01% |
239,800
-1,700
| -0.7% | -$57.3K |
|
1208
AMC Entertainment Holdings
AMC
$2.04B
| $7.37M | ﹤0.01% |
1,850,822
+1,244,035
| +205% | +$5.46M |
|
1209
CALL
GlobalFoundries
GFS
$30.1B
| $7.35M | ﹤0.01% |
171,400
+56,800
| +50% | +$2.38M |
|
1210
CALL
Quantum Computing Inc
QUBT
$1.72B
| $7.35M | ﹤0.01% |
444,300
+410,400
| +1,211% | +$2.25M |
|
1211
PUT
Western Alliance Bancorporation
WAL
$8.97B
| $7.29M | ﹤0.01% |
87,300
+1,100
| +1% | +$96.8K |
|
1212
PUT
TripAdvisor
TRIP
$1.58B
| $7.27M | ﹤0.01% |
492,100
+225,700
| +85% | +$3.3M |
|
1213
CALL
Waste Management
WM
$95.5B
| $7.26M | ﹤0.01% |
36,000
-21,500
| -37% | -$4.62M |
|
1214
CALL
Johnson Controls International
JCI
$87.4B
| $7.25M | ﹤0.01% |
91,900
-72,300
| -44% | -$5.8M |
|
1215
PUT
Tractor Supply
TSCO
$16B
| $7.24M | ﹤0.01% |
136,500
-278,000
| -67% | -$15.7M |
|
1216
PUT
Deckers Outdoor
DECK
$12.8B
| $7.23M | ﹤0.01% |
35,600
-71,300
| -67% | -$12.9M |
|
1217
PUT
Bausch Health
BHC
$1.66B
| $7.21M | ﹤0.01% |
894,000
+47,400
| +6% | +$391K |
|
1218
PUT
monday.com
MNDY
$3.15B
| $7.2M | ﹤0.01% |
30,600
+10,600
| +53% | +$2.94M |
|
1219
CALL
Realty Income
O
$60.8B
| $7.2M | ﹤0.01% |
134,800
-118,700
| -47% | -$6.91M |
|
1220
PUT
Pan American Silver
PAAS
$18.7B
| $7.19M | ﹤0.01% |
355,900
-107,700
| -23% | -$2.41M |
|
1221
CALL
PennyMac Financial
PFSI
$4.36B
| $7.19M | ﹤0.01% |
70,400
-800
| -1% | -$83.7K |
|
1222
PUT
Moody's
MCO
$82.6B
| $7.15M | ﹤0.01% |
15,100
+4,900
| +48% | +$2.34M |
|
1223
CALL
Kimberly-Clark
KMB
$35.9B
| $7.14M | ﹤0.01% |
54,500
-5,500
| -9% | -$750K |
|
1224
CALL
Regions Financial
RF
$26.2B
| $7.13M | ﹤0.01% |
303,100
+18,900
| +7% | +$467K |
|
1225
PUT
Noble Corp
NE
$6.86B
| $7.12M | ﹤0.01% |
226,900
-33,300
| -13% | -$1.1M |
|
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.