---
title: "Social Buzz: Wallstreetbets Stocks Mostly Lower Premarket Tuesday; Sandisk to Fall, ServiceNow to Rise"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/286899725.md"
description: "Premarket trading for Wallstreetbets stocks showed mostly declines, with Sandisk (SNDK) down 3.3%, Rocket Lab (RKLB) down 2.5%, and Poet Technologies (POET) down 2.1%. Micron Technology (MU) fell 2%, AST SpaceMobile (ASTS) declined 1.7%, and Nvidia (NVDA) was down 0.8%. In contrast, ServiceNow (NOW) rose 4.4%, and Microsoft (MSFT) advanced 0.6%."
datetime: "2026-05-19T10:36:00.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/286899725.md)
  - [en](https://longbridge.com/en/news/286899725.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/286899725.md)
---

# Social Buzz: Wallstreetbets Stocks Mostly Lower Premarket Tuesday; Sandisk to Fall, ServiceNow to Rise

06:36 AM EDT, 05/19/2026 (MT Newswires) -- The most-talked-about stocks in the Reddit subforum Wallstreetbets were mostly lower hours before Tuesday's opening bell.

Sandisk ( SNDK ) fell by 3.3% premarket, after closing Monday with a 5.3% drop.

Rocket Lab ( RKLB ) was down 2.5% in premarket hours, swinging from a 5.1% increase at Monday's close.

Poet Technologies ( POET ) fell by 2.1% in pre-bell activity, following an 11% decline in the previous session.

Micron Technology ( MU ) was 2% lower hours before market open, after a 6% decrease Monday.

AST SpaceMobile ( ASTS ) declined by 1.7% pre-bell, swinging from a 3.8% rise in the previous session.

Nvidia ( NVDA ) was down 0.8% premarket, following a 1.3% fall Monday.

ServiceNow ( NOW ) rose by 4.4% in premarket activity, after an 8.8% increase in the previous session.

Microsoft ( MSFT ) advanced by 0.6% pre-bell, following a 0.4% increase at Monday's close.

MT Newswires does not provide investment advice. Unauthorized reproduction is strictly prohibited.

### Related Stocks

- [MU.US](https://longbridge.com/en/quote/MU.US.md)
- [NOW.US](https://longbridge.com/en/quote/NOW.US.md)
- [RKLB.US](https://longbridge.com/en/quote/RKLB.US.md)
- [SNDK.US](https://longbridge.com/en/quote/SNDK.US.md)
- [POET.US](https://longbridge.com/en/quote/POET.US.md)
- [ASTS.US](https://longbridge.com/en/quote/ASTS.US.md)
- [NVDA.US](https://longbridge.com/en/quote/NVDA.US.md)
- [MSFT.US](https://longbridge.com/en/quote/MSFT.US.md)
- [SNDKV.US](https://longbridge.com/en/quote/SNDKV.US.md)
- [NVD.DE](https://longbridge.com/en/quote/NVD.DE.md)

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