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 | |
|---|---|---|---|---|---|---|
3451
CALL
Talos Energy
TALO
$2.44B
| $429K | ﹤0.01% |
27,200
-50,900
| -65% | -$653K |
|
3452
PUT
InMode
INMD
$868M
| $428K | ﹤0.01% |
31,300
-57,500
| -65% | -$820K |
|
3453
CALL
ICL Group
ICL
$6.69B
| $428K | ﹤0.01% |
82,600
-28,300
| -26% | -$151K |
|
3454
CALL
Unifirst Corp
UNF
$5.31B
| $428K | ﹤0.01% |
+1,700
| New | +$392K |
|
3455
TFS Financial
TFSL
$5.06B
| $427K | ﹤0.01% |
+30,423
| New | +$430K |
|
3456
PUT
Eastman Chemical
EMN
$8.01B
| $427K | ﹤0.01% |
5,600
+600
| +12% | +$43.2K |
|
3457
Palo Alto Networks
PANW
$265B
| $427K | ﹤0.01% |
2,664
-5,003
| -65% | -$840K |
|
|
GLDB
3458
CALL
IDX Alternative FIAT ETF
GLDB
$34.4M
| $427K | ﹤0.01% |
240,400
+125,900
| +110% | +$3.16M |
|
|
CRCG
3459
CALL
Leverage Shares 2X Long CRCL Daily ETF
CRCG
$86.7M
| $425K | ﹤0.01% |
7,940
+3,850
| +94% | +$104K |
|
|
CTLP
3460
PUT
DELISTED
Cantaloupe
CTLP
| $425K | ﹤0.01% |
39,300
-69,600
| -64% | -$735K |
|
3461
CALL
Rocket Pharmaceuticals
RCKT
$351M
| $424K | ﹤0.01% |
118,500
+62,700
| +112% | +$249K |
|
|
TGB
3462
PUT
Trekor Metals
TGB
$2.59B
| $424K | ﹤0.01% |
65,700
+23,200
| +55% | +$169K |
|
3463
CALL
Credit Acceptance
CACC
$5.81B
| $423K | ﹤0.01% |
1,000
-100
| -9% | -$47.2K |
|
|
GTM
3464
CALL
ZoomInfo Technologies
GTM
$978M
| $423K | ﹤0.01% |
70,800
-44,200
| -38% | -$325K |
|
|
BSOL
3465
CALL
Bitwise Solana Staking ETF
BSOL
$553M
| $423K | ﹤0.01% |
38,300
+24,600
| +180% | +$333K |
|
3466
PUT
Gulfport Energy Corp
GPOR
$2.82B
| $423K | ﹤0.01% |
+2,000
| New | +$398K |
|
3467
Triple Flag Precious Metals
TFPM
$6.12B
| $423K | ﹤0.01% |
12,184
-16,748
| -58% | -$606K |
|
3468
PUT
Semtech
SMTC
$10.7B
| $423K | ﹤0.01% |
5,500
-9,500
| -63% | -$781K |
|
3469
PUT
Broadridge
BR
$17.9B
| $422K | ﹤0.01% |
+2,600
| New | +$494K |
|
3470
PUT
Yext
YEXT
$552M
| $422K | ﹤0.01% |
110,000
+109,000
| +10,900% | +$656K |
|
3471
CALL
James Hardie Industries
JHX
$15.4B
| $422K | ﹤0.01% |
22,300
-60,500
| -73% | -$1.36M |
|
3472
Invesco KBW Bank ETF
KBWB
$6.83B
| $422K | ﹤0.01% |
+5,334
| New | +$446K |
|
3473
CALL
WillScot Mobile Mini Holdings
WSC
$4.35B
| $422K | ﹤0.01% |
24,300
-12,600
| -34% | -$257K |
|
|
XXI
3474
PUT
Twenty One Capital Inc
XXI
$1.54B
| $422K | ﹤0.01% |
65,900
-39,900
| -38% | -$292K |
|
3475
CALL
LegalZoom.com
LZ
$1.35B
| $421K | ﹤0.01% |
74,300
-126,300
| -63% | -$958K |
|
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.