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 | |
|---|---|---|---|---|---|---|
176
PUT
Eli Lilly
LLY
$1.04T
| $67M | 0.04% |
72,800
-94,300
| -56% | -$95.6M |
|
177
CALL
Strive Inc
ASST
$1.05B
| $66.2M | 0.04% |
6,609,800
+6,359,130
| +2,537% | +$79.1M |
|
178
CALL
iShares Gold Trust
IAU
$64.4B
| $65.3M | 0.04% |
741,100
-44,300
| -6% | -$4.06M |
|
179
CALL
Snowflake
SNOW
$93.4B
| $64.5M | 0.04% |
427,900
-140,800
| -25% | -$26.1M |
|
180
CALL
NextEra Energy
NEE
$186B
| $64.3M | 0.04% |
692,400
+47,700
| +7% | +$4.24M |
|
181
PUT
Morgan Stanley
MS
$345B
| $64.2M | 0.04% |
390,000
-259,600
| -40% | -$44.9M |
|
182
CALL
AST SpaceMobile
ASTS
$18.8B
| $63.4M | 0.04% |
765,300
-409,500
| -35% | -$38.6M |
|
183
CALL
Super Micro Computer
SMCI
$20.6B
| $63.4M | 0.04% |
2,782,200
-800,700
| -22% | -$24M |
|
184
CALL
Pfizer
PFE
$142B
| $63.1M | 0.04% |
2,248,600
-1,668,200
| -43% | -$44.4M |
|
185
PUT
Coca-Cola
KO
$355B
| $62.2M | 0.04% |
818,200
-249,100
| -23% | -$18.8M |
|
186
CALL
Qualcomm
QCOM
$186B
| $61.8M | 0.04% |
480,100
-467,000
| -49% | -$68.2M |
|
|
ECHO
187
CALL
EchoStar
ECHO
$27.4B
| $61.3M | 0.04% |
524,000
+48,700
| +10% | +$5.59M |
|
188
CALL
United Parcel Service
UPS
$99.1B
| $61.2M | 0.04% |
622,500
-73,400
| -11% | -$7.87M |
|
189
PUT
Pinduoduo
PDD
$118B
| $61.1M | 0.04% |
598,300
-468,700
| -44% | -$49.3M |
|
|
190
CALL
Coca-Cola
KO
$355B
| $61M | 0.04% |
802,500
-8,800
| -1% | -$665K |
|
191
CALL
Booking.com
BKNG
$140B
| $60.6M | 0.04% |
360,000
+55,000
| +18% | +$10.1M |
|
192
CALL
GE Aerospace
GE
$357B
| $60.3M | 0.04% |
212,500
+97,900
| +85% | +$30.8M |
|
193
PUT
Iris Energy
IREN
$15.2B
| $59.2M | 0.04% |
1,725,700
-1,312,600
| -43% | -$59.3M |
|
|
CRCL
194
CALL
Circle Internet Group
CRCL
$16.9B
| $58.9M | 0.04% |
617,500
-491,000
| -44% | -$41.6M |
|
195
CALL
JD.com
JD
$40.8B
| $58.5M | 0.04% |
1,980,000
-3,052,400
| -61% | -$86.3M |
|
196
CALL
Starbucks
SBUX
$119B
| $58.1M | 0.04% |
648,500
-175,000
| -21% | -$16.6M |
|
197
PUT
SoFi Technologies
SOFI
$22.1B
| $57.7M | 0.04% |
3,630,900
-1,546,900
| -30% | -$32.6M |
|
198
CALL
Direxion Daily S&P Oil & Gas Exp. & Prod. Bull 2X ETF
GUSH
$253M
| $57.4M | 0.04% |
1,869,200
-4,253,000
| -69% | -$132M |
|
199
PUT
Shopify
SHOP
$152B
| $57M | 0.04% |
480,900
-41,100
| -8% | -$5.4M |
|
200
PUT
Vanguard S&P 500 ETF
VOO
$983B
| $56.6M | 0.04% |
158,700
-23,800
| -13% | -$14.9M |
|
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.