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 | |
|---|---|---|---|---|---|---|
301
PUT
Marathon Petroleum
MPC
$91.1B
| $34M | 0.02% |
139,100
+95,500
| +219% | +$19.3M |
|
302
CALL
Lucid Motors
LCID
$2.51B
| $33.9M | 0.02% |
3,558,600
-2,434,200
| -41% | -$25.3M |
|
303
Palantir
PLTR
$296B
| $33.8M | 0.02% |
231,292
+40,002
| +21% | +$6.12M |
|
304
CALL
PepsiCo
PEP
$184B
| $33.8M | 0.02% |
217,500
-337,700
| -61% | -$52.6M |
|
305
PUT
Qualcomm
QCOM
$180B
| $33.7M | 0.02% |
261,800
-385,000
| -60% | -$56.2M |
|
306
Intel
INTC
$504B
| $33.4M | 0.02% |
757,722
-324,524
| -30% | -$14.9M |
|
307
CALL
American Express
AXP
$233B
| $33.4M | 0.02% |
110,500
-86,700
| -44% | -$29.1M |
|
308
PUT
Fair Isaac
FICO
$28B
| $33.4M | 0.02% |
31,300
+21,700
| +226% | +$29.8M |
|
309
CALL
Cameco
CCJ
$38.9B
| $33.4M | 0.02% |
307,100
-77,000
| -20% | -$8.81M |
|
310
PUT
Mastercard
MA
$468B
| $33.1M | 0.02% |
66,200
-29,900
| -31% | -$15.7M |
|
311
PUT
Dow Inc
DOW
$22.2B
| $33M | 0.02% |
797,600
+36,500
| +5% | +$1.16M |
|
312
PUT
3M
MMM
$87.5B
| $32.9M | 0.02% |
226,800
+7,500
| +3% | +$1.19M |
|
313
PUT
Royal Caribbean
RCL
$76B
| $32.9M | 0.02% |
119,400
-33,600
| -22% | -$10M |
|
314
CALL
Devon Energy
DVN
$52.2B
| $32.8M | 0.02% |
651,800
-66,400
| -9% | -$2.85M |
|
315
PUT
Lowe's Companies
LOW
$113B
| $32.6M | 0.02% |
138,000
-8,100
| -6% | -$2.11M |
|
316
PUT
Constellation Energy
CEG
$98.4B
| $32M | 0.02% |
114,700
-118,600
| -51% | -$36M |
|
317
PUT
SLB Ltd
SLB
$70.6B
| $32M | 0.02% |
622,900
-269,300
| -30% | -$13.1M |
|
318
PUT
Lockheed Martin
LMT
$131B
| $31.7M | 0.02% |
52,400
+6,700
| +15% | +$4.13M |
|
319
PUT
Adobe
ADBE
$84.3B
| $31.6M | 0.02% |
130,000
-169,200
| -57% | -$46.9M |
|
320
CALL
Amgen
AMGN
$200B
| $31.6M | 0.02% |
89,800
-27,400
| -23% | -$9.77M |
|
321
CALL
Albemarle
ALB
$13.8B
| $31.5M | 0.02% |
175,200
-57,700
| -25% | -$9.85M |
|
322
PUT
CVS Health
CVS
$136B
| $30.9M | 0.02% |
429,600
-385,300
| -47% | -$29.7M |
|
323
CALL
McDonald's
MCD
$187B
| $30.6M | 0.02% |
98,300
-72,900
| -43% | -$23.2M |
|
324
CALL
Cheniere Energy
LNG
$57B
| $30.4M | 0.02% |
107,000
+78,700
| +278% | +$18.2M |
|
325
CALL
GraniteShares Bloomberg Commodity Broad Strategy No K-1 ETF
COMB
$136M
| $30M | 0.02% |
752,100
+77,200
| +11% | +$1.83M |
|
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.