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 | |
|---|---|---|---|---|---|---|
3476
PUT
NovaGold Resources
NG
$2.57B
| $421K | ﹤0.01% |
46,900
+41,000
| +695% | +$422K |
|
3477
CALL
Relmada Therapeutics
RLMD
$529M
| $421K | ﹤0.01% |
60,500
+28,600
| +90% | +$135K |
|
3478
CALL
Toro Company
TTC
$8.71B
| $420K | ﹤0.01% |
4,500
-1,000
| -18% | -$94.2K |
|
|
MRP
3479
PUT
Millrose Properties Inc
MRP
$4.64B
| $420K | ﹤0.01% |
15,000
-45,400
| -75% | -$1.37M |
|
3480
CALL
Precigen
PGEN
$2.18B
| $420K | ﹤0.01% |
108,500
-49,300
| -31% | -$202K |
|
3481
CALL
Achieve Life Sciences
ACHV
$641M
| $419K | ﹤0.01% |
142,600
+74,400
| +109% | +$330K |
|
3482
PUT
Consolidated Edison
ED
$40.4B
| $419K | ﹤0.01% |
3,700
-1,800
| -33% | -$195K |
|
3483
Fidelity National Information Services
FIS
$23.2B
| $419K | ﹤0.01% |
+8,927
| New | +$480K |
|
3484
PureCycle Technologies
PCT
$1.24B
| $419K | ﹤0.01% |
+80,644
| New | +$672K |
|
3485
Procept Biorobotics
PRCT
$1.04B
| $418K | ﹤0.01% |
16,725
+10,086
| +152% | +$284K |
|
3486
CALL
Zebra Technologies
ZBRA
$13.8B
| $418K | ﹤0.01% |
+2,000
| New | +$470K |
|
3487
CALL
Sabesp
SBS
$19.3B
| $418K | ﹤0.01% |
+68,500
| New | +$376K |
|
3488
CALL
Movado Group
MOV
$852M
| $418K | ﹤0.01% |
17,100
+15,400
| +906% | +$365K |
|
3489
iShares MSCI Chile ETF
ECH
$1.01B
| $418K | ﹤0.01% |
10,502
+5,085
| +94% | +$217K |
|
3490
CALL
IDEX
IEX
$16.9B
| $417K | ﹤0.01% |
2,200
-4,300
| -66% | -$849K |
|
3491
PUT
Phunware
PHUN
$43.3M
| $416K | ﹤0.01% |
235,300
-58,700
| -20% | -$106K |
|
3492
Burford Capital
BUR
$892M
| $416K | ﹤0.01% |
92,116
+6,546
| +8% | +$57.3K |
|
3493
MGIC Investment
MTG
$6.15B
| $416K | ﹤0.01% |
15,833
+8,185
| +107% | +$219K |
|
3494
CALL
Cellebrite
CLBT
$3.61B
| $415K | ﹤0.01% |
30,100
+29,700
| +7,425% | +$448K |
|
3495
CALL
Lloyds Banking Group
LYG
$89.5B
| $414K | ﹤0.01% |
82,400
-30,600
| -27% | -$168K |
|
3496
Signet Jewelers
SIG
$3.68B
| $414K | ﹤0.01% |
+4,894
| New | +$445K |
|
3497
US Global Jets ETF
JETS
$776M
| $414K | ﹤0.01% |
16,799
+3,026
| +22% | +$83.8K |
|
3498
CALL
Texas Roadhouse
TXRH
$13.6B
| $413K | ﹤0.01% |
2,500
-400
| -14% | -$71.8K |
|
3499
Ovintiv
OVV
$17B
| $412K | ﹤0.01% |
6,948
+3,517
| +103% | +$170K |
|
3500
CALL
Humacyte
HUMA
$176M
| $412K | ﹤0.01% |
679,400
-87,500
| -11% | -$91K |
|
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.