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 | |
|---|---|---|---|---|---|---|
|
ARI
1376
PUT
Apollo Commercial Real Estate
ARI
$887M
| $3.45M | ﹤0.01% |
+326,400
| New | +$3.4M |
|
1377
PUT
Pool Corp
POOL
$6.7B
| $3.44M | ﹤0.01% |
17,000
+2,100
| +14% | +$495K |
|
1378
RTX Corp
RTX
$287B
| $3.44M | ﹤0.01% |
+17,827
| New | +$3.54M |
|
1379
Lam Research
LRCX
$382B
| $3.44M | ﹤0.01% |
16,078
-19,682
| -55% | -$4.4M |
|
1380
PUT
Harley-Davidson
HOG
$2.68B
| $3.43M | ﹤0.01% |
169,600
+48,500
| +40% | +$951K |
|
|
BTC
1381
CALL
Grayscale Bitcoin Mini Trust ETF
BTC
$3.4B
| $3.43M | ﹤0.01% |
+114,300
| New | +$3.86M |
|
1382
PUT
Archer Aviation
ACHR
$3.64B
| $3.42M | ﹤0.01% |
661,700
-181,300
| -22% | -$1.29M |
|
1383
CALL
e.l.f. Beauty
ELF
$4.56B
| $3.42M | ﹤0.01% |
56,400
-83,700
| -60% | -$6.81M |
|
1384
CALL
Red Cat Holdings
RCAT
$1.16B
| $3.41M | ﹤0.01% |
260,800
-298,200
| -53% | -$4.07M |
|
1385
PUT
Host Hotels & Resorts
HST
$16.8B
| $3.41M | ﹤0.01% |
178,100
+159,300
| +847% | +$3.04M |
|
1386
CALL
Hertz
HTZ
$572M
| $3.41M | ﹤0.01% |
740,100
-360,300
| -33% | -$1.74M |
|
1387
PUT
Intuitive Machines
LUNR
$2.07B
| $3.41M | ﹤0.01% |
183,700
-111,100
| -38% | -$2.05M |
|
1388
Vista Energy
VIST
$7.75B
| $3.41M | ﹤0.01% |
45,134
+36,735
| +437% | +$2.14M |
|
1389
PUT
Shake Shack
SHAK
$2.3B
| $3.41M | ﹤0.01% |
38,500
-6,700
| -15% | -$616K |
|
1390
PUT
Quantum Computing Inc
QUBT
$1.68B
| $3.4M | ﹤0.01% |
497,000
-823,800
| -62% | -$7.53M |
|
|
CRWV
1391
CoreWeave
CRWV
$39.2B
| $3.4M | ﹤0.01% |
43,901
-197,693
| -82% | -$17.2M |
|
1392
PUT
Hawaiian Electric Industries
HE
$2.33B
| $3.4M | ﹤0.01% |
229,100
-116,600
| -34% | -$1.76M |
|
1393
Sharplink Inc
SBET
$1.22B
| $3.4M | ﹤0.01% |
526,984
+201,011
| +62% | +$1.63M |
|
1394
Comcast
CMCSA
$79.1B
| $3.4M | ﹤0.01% |
118,388
-665,309
| -85% | -$19.9M |
|
1395
Carnival Corporation Ltd
CCL
$36.1B
| $3.39M | ﹤0.01% |
131,163
+39,718
| +43% | +$1.16M |
|
1396
PUT
Macy's
M
$6.15B
| $3.39M | ﹤0.01% |
187,200
-337,100
| -64% | -$6.82M |
|
1397
Applied Optoelectronics
AAOI
$8.04B
| $3.38M | ﹤0.01% |
39,903
-123,005
| -76% | -$7.85M |
|
1398
PUT
Eldorado Gold
EGO
$8.31B
| $3.37M | ﹤0.01% |
98,300
-600
| -0.6% | -$24.4K |
|
1399
CALL
Brookfield Asset Management
BAM
$74B
| $3.37M | ﹤0.01% |
+75,900
| New | +$3.71M |
|
1400
Kimberly-Clark
KMB
$36.4B
| $3.37M | ﹤0.01% |
34,948
-58,895
| -63% | -$6.03M |
|
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.