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 |
Amazon
AMZN
|
+$168M |
| 2 |
NVIDIA
NVDA
|
+$141M |
| 3 |
TSMC
TSM
|
+$121M |
| 4 |
Meta Platforms (Facebook)
META
|
+$107M |
| 5 |
SPDR Gold Trust
GLD
|
+$103M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$174M |
| 2 |
Western Digital
WDC
|
+$87.7M |
| 3 |
Broadcom
AVGO
|
+$62.2M |
| 4 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$52M |
| 5 |
Netflix
NFLX
|
+$44.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.62% |
| 2 | Communication Services | 0.22% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Healthcare | 0.2% |
| 5 | Industrials | 0.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1026
PUT
Texas Pacific Land
TPL
$28.9B
| $5.69M | ﹤0.01% |
+12,000
| New | +$5.16M |
|
1027
CALL
GDS Holdings
GDS
$6.34B
| $5.69M | ﹤0.01% |
141,300
+41,400
| +41% | +$1.78M |
|
1028
PUT
DraftKings
DKNG
$11.4B
| $5.69M | ﹤0.01% |
263,200
-171,400
| -39% | -$4.64M |
|
1029
Global X Copper Miners ETF NEW
COPX
$7.13B
| $5.69M | ﹤0.01% |
+74,508
| New | +$6.17M |
|
1030
CALL
PureCycle Technologies
PCT
$1.17B
| $5.68M | ﹤0.01% |
1,094,600
-332,700
| -23% | -$2.77M |
|
1031
CALL
STMicroelectronics
STM
$46B
| $5.68M | ﹤0.01% |
164,300
-76,300
| -32% | -$2.39M |
|
1032
PUT
Roper Technologies
ROP
$36.3B
| $5.66M | ﹤0.01% |
16,000
+13,900
| +662% | +$5.13M |
|
1033
CALL
PNC Financial Services
PNC
$100B
| $5.66M | ﹤0.01% |
27,200
-11,600
| -30% | -$2.53M |
|
1034
CALL
Comfort Systems
FIX
$61B
| $5.65M | ﹤0.01% |
4,100
-600
| -13% | -$762K |
|
1035
CALL
Restaurant Brands International
QSR
$25.1B
| $5.63M | ﹤0.01% |
76,200
+2,600
| +4% | +$183K |
|
1036
CALL
NextNav
NN
$1.7B
| $5.63M | ﹤0.01% |
351,400
-373,800
| -52% | -$6.05M |
|
1037
CALL
GSK
GSK
$103B
| $5.63M | ﹤0.01% |
102,000
-53,200
| -34% | -$2.88M |
|
|
BNY
1038
PUT
Bank of New York Mellon
BNY
$108B
| $5.62M | ﹤0.01% |
47,400
-14,100
| -23% | -$1.68M |
|
1039
Energy Fuels
UUUU
$2.82B
| $5.61M | ﹤0.01% |
307,525
+209,430
| +213% | +$4.34M |
|
1040
KKR & Co
KKR
$89.2B
| $5.61M | ﹤0.01% |
+60,647
| New | +$6.39M |
|
1041
CALL
Alnylam Pharmaceuticals
ALNY
$36.3B
| $5.59M | ﹤0.01% |
16,900
+4,200
| +33% | +$1.43M |
|
1042
CALL
Gartner
IT
$9.41B
| $5.59M | ﹤0.01% |
35,300
+24,500
| +227% | +$4.51M |
|
1043
CALL
Ares Capital
ARCC
$13.5B
| $5.59M | ﹤0.01% |
310,100
+145,300
| +88% | +$2.81M |
|
1044
State Street Consumer Discretionary Select Sector SPDR ETF
XLY
$21.4B
| $5.58M | ﹤0.01% |
+51,226
| New | +$5.99M |
|
1045
CALL
Capri Holdings
CPRI
$1.77B
| $5.58M | ﹤0.01% |
316,600
+217,900
| +221% | +$4.61M |
|
1046
Constellation Brands
STZ
$22.2B
| $5.58M | ﹤0.01% |
37,176
+32,800
| +750% | +$5.07M |
|
1047
CALL
Paychex
PAYX
$40.4B
| $5.57M | ﹤0.01% |
60,500
+26,600
| +78% | +$2.63M |
|
1048
PUT
Transocean
RIG
$5.92B
| $5.54M | ﹤0.01% |
835,600
-444,600
| -35% | -$2.5M |
|
1049
PUT
TPG
TPG
$6.87B
| $5.5M | ﹤0.01% |
135,800
+134,800
| +13,480% | +$6.91M |
|
1050
CALL
GlobalFoundries
GFS
$29.4B
| $5.5M | ﹤0.01% |
123,600
+85,900
| +228% | +$3.79M |
|
Similar funds
Simplex Trading's Q1 2026 Portfolio in Review
As of Q1 2026, Simplex Trading held 10,500 positions worth $149B, down 16% from $177B the previous quarter. Its ten largest holdings account for 51% of the portfolio.
Simplex Trading withdrew a net $18.1B in Q1 2026, closing 1,574 positions and reducing 3,926 holdings. Its most notable exit was Direxion Daily Semiconductor Bull 3X ETF, an estimated $52M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.62% of assets, up from 0.59% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amazon worth $159M.
- Simplex Trading's largest Q1 2026 buy was Amazon: 764,884 shares worth $159M.
- Simplex Trading added most to NVIDIA in Q1 2026, an estimated $141M increase.
- Simplex Trading's biggest Q1 2026 reduction was Apple, cutting an estimated $174M.
- Simplex Trading fully exited Direxion Daily Semiconductor Bull 3X ETF in Q1 2026, selling an estimated $52M.
- Simplex Trading's ten largest holdings make up 51% of its $149B portfolio in Q1 2026.
- Simplex Trading opened 2,156 new positions and closed 1,574 in Q1 2026.
- Simplex Trading's portfolio value fell 16% quarter-over-quarter to $149B.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.