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 | |
|---|---|---|---|---|---|---|
251
CALL
Texas Instruments
TXN
$256B
| $43.4M | 0.03% |
223,800
-101,900
| -31% | -$20.6M |
|
|
ETHA
252
CALL
iShares Ethereum Trust ETF
ETHA
$5.32B
| $43.4M | 0.03% |
2,744,000
-2,217,700
| -45% | -$40.1M |
|
253
PUT
Carnival Corporation Ltd
CCL
$34.9B
| $43.3M | 0.03% |
1,673,800
-495,900
| -23% | -$14.5M |
|
254
PUT
Procter & Gamble
PG
$340B
| $42.8M | 0.03% |
296,500
+64,800
| +28% | +$9.82M |
|
255
CALL
Bristol-Myers Squibb
BMY
$126B
| $42.8M | 0.03% |
705,900
-258,600
| -27% | -$15.1M |
|
256
PUT
Blackstone
BX
$151B
| $42.3M | 0.03% |
367,600
+120,800
| +49% | +$15.7M |
|
257
United States Oil Fund
USO
$2.54B
| $42M | 0.03% |
+329,788
| New | +$29.2M |
|
258
PUT
American Airlines Group
AAL
$8.87B
| $41.8M | 0.03% |
3,889,400
-1,678,900
| -30% | -$22.3M |
|
259
Alphabet (Google) Class C
GOOG
$3.9T
| $41.7M | 0.03% |
145,393
+96,887
| +200% | +$30.4M |
|
|
ECHO
260
PUT
EchoStar
ECHO
$26.5B
| $41.4M | 0.03% |
353,400
+57,200
| +19% | +$6.56M |
|
261
PUT
ServiceNow
NOW
$96.5B
| $40.9M | 0.03% |
391,000
+53,100
| +16% | +$6.25M |
|
|
ETHA
262
PUT
iShares Ethereum Trust ETF
ETHA
$5.32B
| $40.8M | 0.03% |
2,579,700
-475,300
| -16% | -$8.6M |
|
263
CALL
ConocoPhillips
COP
$148B
| $40.7M | 0.03% |
308,500
-37,800
| -11% | -$4.19M |
|
264
PUT
Starbucks
SBUX
$117B
| $40.5M | 0.03% |
452,300
-211,200
| -32% | -$20M |
|
265
PUT
United Parcel Service
UPS
$97.1B
| $40.5M | 0.03% |
411,400
-186,300
| -31% | -$20M |
|
|
266
CALL
American Airlines Group
AAL
$8.87B
| $40.4M | 0.03% |
3,763,800
+1,370,600
| +57% | +$18.2M |
|
267
CALL
Cloudflare
NET
$93.7B
| $39.9M | 0.03% |
193,500
+45,400
| +31% | +$8.66M |
|
268
PUT
Vertiv
VRT
$117B
| $39.9M | 0.03% |
159,100
-602,300
| -79% | -$134M |
|
269
PUT
Direxion Daily S&P Oil & Gas Exp. & Prod. Bull 2X ETF
GUSH
$256M
| $39.8M | 0.03% |
1,644,900
-4,117,400
| -71% | -$128M |
|
|
BMNR
270
CALL
BitMine Immersion Technologies
BMNR
$9.97B
| $39.8M | 0.03% |
+2,011,900
| New | +$47.4M |
|
271
CALL
AT&T
T
$160B
| $39.5M | 0.03% |
1,361,800
-749,200
| -35% | -$20M |
|
272
PUT
Corning
GLW
$136B
| $39.5M | 0.03% |
290,300
+37,100
| +15% | +$4.47M |
|
273
CALL
Seagate
STX
$209B
| $39.3M | 0.03% |
+100,200
| New | +$38.2M |
|
274
PUT
TeraWulf
WULF
$10.2B
| $39.2M | 0.03% |
2,719,400
-2,762,200
| -50% | -$41M |
|
275
CALL
Amplify Online Retail ETF
IBUY
$106M
| $39M | 0.03% |
1,312,800
+975,100
| +289% | +$66.5M |
|
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.