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 | |
|---|---|---|---|---|---|---|
3126
PUT
Corebridge Financial
CRBG
$14.4B
| $561K | ﹤0.01% |
23,500
-15,100
| -39% | -$423K |
|
3127
PUT
Bausch Health
BHC
$2.25B
| $561K | ﹤0.01% |
103,800
-37,900
| -27% | -$227K |
|
3128
CALL
Valley National Bancorp
VLY
$7.92B
| $560K | ﹤0.01% |
45,600
+24,000
| +111% | +$299K |
|
3129
Avantis International Small Cap Value ETF
AVDV
$19.1B
| $559K | ﹤0.01% |
+5,595
| New | +$571K |
|
3130
PUT
Alkermes
ALKS
$8.39B
| $559K | ﹤0.01% |
15,800
-12,600
| -44% | -$391K |
|
3131
PUT
Itaú Unibanco
ITUB
$93B
| $558K | ﹤0.01% |
66,600
-22,600
| -25% | -$189K |
|
3132
CALL
RingCentral
RNG
$4.48B
| $558K | ﹤0.01% |
15,000
-44,000
| -75% | -$1.42M |
|
3133
CALL
Imperial Petroleum
IMPP
$212M
| $557K | ﹤0.01% |
130,200
+25,500
| +24% | +$102K |
|
3134
J.M. Smucker
SJM
$13.1B
| $557K | ﹤0.01% |
+5,773
| New | +$605K |
|
3135
CALL
Halozyme
HALO
$9.88B
| $556K | ﹤0.01% |
8,600
-33,700
| -80% | -$2.38M |
|
|
ETHU
3136
2x Ether ETF
ETHU
$762M
| $556K | ﹤0.01% |
+24,867
| New | +$852K |
|
3137
Entergy
ETR
$50.4B
| $556K | ﹤0.01% |
+4,945
| New | +$497K |
|
3138
CALL
Canadian National Railway
CNI
$76.9B
| $555K | ﹤0.01% |
5,400
-5,600
| -51% | -$578K |
|
3139
Chewy
CHWY
$9.34B
| $555K | ﹤0.01% |
20,541
-126,752
| -86% | -$3.53M |
|
3140
PUT
Viper Energy
VNOM
$8.48B
| $554K | ﹤0.01% |
11,800
+1,300
| +12% | +$55.7K |
|
3141
Varonis Systems
VRNS
$4.58B
| $553K | ﹤0.01% |
25,773
-9,553
| -27% | -$259K |
|
3142
Red Cat Holdings
RCAT
$1.12B
| $553K | ﹤0.01% |
42,248
-38,850
| -48% | -$531K |
|
3143
PUT
Steven Madden
SHOO
$3.5B
| $553K | ﹤0.01% |
16,300
+14,400
| +758% | +$558K |
|
3144
CALL
Intrepid Potash
IPI
$474M
| $552K | ﹤0.01% |
12,900
+12,400
| +2,480% | +$446K |
|
3145
SentinelOne
S
$6.31B
| $551K | ﹤0.01% |
42,810
-180,346
| -81% | -$2.5M |
|
3146
PUT
Alcon
ALC
$33.9B
| $550K | ﹤0.01% |
7,300
-3,000
| -29% | -$239K |
|
3147
CALL
Anterix
ATEX
$1.82B
| $550K | ﹤0.01% |
+14,400
| New | +$456K |
|
3148
PUT
Masco
MAS
$14.2B
| $549K | ﹤0.01% |
9,100
+8,100
| +810% | +$548K |
|
|
VSNT
3149
Versant Media Group
VSNT
$5.08B
| $549K | ﹤0.01% |
+14,833
| New | +$500K |
|
3150
SkyWater Technology
SKYT
$1.6B
| $549K | ﹤0.01% |
+20,033
| New | +$589K |
|
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.