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 | |
|---|---|---|---|---|---|---|
1176
CALL
2x Long VIX Futures ETF
UVIX
$286M
| $4.52M | ﹤0.01% |
20,640
-7,805
| -27% | -$1.05M |
|
1177
XPeng
XPEV
$11.8B
| $4.51M | ﹤0.01% |
263,566
-184,186
| -41% | -$3.42M |
|
1178
PUT
Diamondback Energy
FANG
$57.6B
| $4.51M | ﹤0.01% |
22,800
-78,000
| -77% | -$13.3M |
|
1179
CALL
HP
HPQ
$23.5B
| $4.51M | ﹤0.01% |
234,700
-157,800
| -40% | -$3.07M |
|
1180
CALL
T. Rowe Price
TROW
$25B
| $4.5M | ﹤0.01% |
49,900
+5,900
| +13% | +$572K |
|
1181
CALL
Deutsche Bank
DB
$66.3B
| $4.48M | ﹤0.01% |
150,500
+25,400
| +20% | +$895K |
|
1182
PUT
MetLife
MET
$61B
| $4.48M | ﹤0.01% |
63,300
-38,900
| -38% | -$2.91M |
|
1183
PUT
Public Storage
PSA
$60.2B
| $4.47M | ﹤0.01% |
16,500
+15,700
| +1,963% | +$4.5M |
|
1184
CALL
AllianceBernstein
AB
$3.47B
| $4.47M | ﹤0.01% |
119,300
+115,400
| +2,959% | +$4.53M |
|
1185
PUT
Lemonade
LMND
$4.62B
| $4.46M | ﹤0.01% |
71,200
+20,700
| +41% | +$1.43M |
|
1186
TeraWulf
WULF
$9.15B
| $4.44M | ﹤0.01% |
308,017
-1,633,000
| -84% | -$24.2M |
|
1187
CALL
Expedia Group
EXPE
$31.2B
| $4.43M | ﹤0.01% |
19,200
-31,900
| -62% | -$7.84M |
|
|
HOLX
1188
PUT
DELISTED
Hologic
HOLX
| $4.43M | ﹤0.01% |
58,600
+32,900
| +128% | +$2.47M |
|
1189
CALL
Prudential Financial
PRU
$41.7B
| $4.43M | ﹤0.01% |
45,300
+3,700
| +9% | +$383K |
|
1190
PUT
Medtronic
MDT
$107B
| $4.42M | ﹤0.01% |
51,000
-55,800
| -52% | -$5.35M |
|
|
P
1191
CALL
Everpure Inc
P
$24.8B
| $4.42M | ﹤0.01% |
74,800
-90,200
| -55% | -$6.11M |
|
1192
PUT
Comfort Systems
FIX
$61B
| $4.41M | ﹤0.01% |
3,200
-1,900
| -37% | -$2.41M |
|
|
PSKY
1193
CALL
Paramount Skydance Corp
PSKY
$9.19B
| $4.4M | ﹤0.01% |
487,400
-154,400
| -24% | -$1.69M |
|
1194
iShares MSCI Global Silver and Metals Miners ETF
SLVP
$805M
| $4.39M | ﹤0.01% |
123,936
+40,747
| +49% | +$1.63M |
|
1195
PUT
AutoZone
AZO
$48.3B
| $4.39M | ﹤0.01% |
1,300
-12,900
| -91% | -$46.3M |
|
1196
PUT
FuboTV Inc
FUBO
$245M
| $4.37M | ﹤0.01% |
462,300
+307,492
| +199% | +$6.09M |
|
1197
CALL
State Street SPDR Portfolio Europe ETF
SPEU
$712M
| $4.37M | ﹤0.01% |
70,400
+16,500
| +31% | +$883K |
|
1198
CALL
CenterPoint Energy
CNP
$29.1B
| $4.35M | ﹤0.01% |
100,700
+94,800
| +1,607% | +$3.91M |
|
|
DCH
1199
CALL
Dauch Corp
DCH
$1.3B
| $4.34M | ﹤0.01% |
+732,100
| New | +$5.09M |
|
1200
CALL
Bitdeer Technologies
BTDR
$2.81B
| $4.33M | ﹤0.01% |
500,400
-284,200
| -36% | -$2.99M |
|
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.