This guide explains how to earn and use Valley Stock Bills in Arknights: Endfield, including how to obtain them and the most effective ways to use them.
How to Get Valley Stock Bills
Best Farming and Stock Bills Methods
| How to Obtain | Recommendation |
| ▼[Recommended] Buying and Selling Goods | ★★★ |
| ▼Perform Outpost Trade | ★★・ |
| ▼Delivery from Depot Node | ★★・ |
| ▼Defeat Enemies | ★・・ |
In Arknights: Endfield, Valley Stock Bills are most efficiently obtained by buying and selling Market-Priced Goods. You can also acquire them through Outpost Trade, Delivery missions from the Depot Node, and other sources, so be sure to complete these activities until you reach the limit. Additionally, Valley Stock Bills can be obtained by defeating enemies, allowing you to accumulate them naturally while leveling up.
[Recommended] Buying and Selling Stocks

| Unlock Condition | After Clearing the Lucky Carrot Side Mission |
Although some initial Valley Stock Bills are required, buying and selling Goods is the most efficient way to earn them. When trading, check the Friend Price and take advantage of price differences to Buy Low and Sell High. To maximize profits, select the friend offering the highest purchase price, then go to Dijiang → Stock Redistribution Terminal → Sell Goods.
[With Limit] Perform Outpost Trade

| Unlock Condition | Arrive at Valley Pass |
You can perform Outpost Trade from Menu → Regional Development → Outpost Management. By submitting items from the Valley IV Outpost, you can exchange them for up to the Outpost Trade Limit of Valley Stock Bills. You can also change the trade items, and each trade typically rewards one Valley Stock Bill.
Check the Assignment Effect and Characters
Normal | When Obtaining Extra |
Carefully select the characters to dispatch to the Sub-PAC. For example, assigning Antal grants a 20% chance to obtain one additional bill per trade.
[With Limit] Delivery from the "Depot Node"

From Regional Development → Depot Node, perform tasks such as Packing → Delivery to receive Valley Stock Bills as rewards. Delivery destinations are indicated by a blue circle icon. Be sure to complete these tasks daily.
Defeat Enemies

You can also obtain Valley Stock Bills by defeating enemies, allowing you to earn them in parallel with leveling up.
Exploration Level Increases Valley Stock Bills
Raising the Exploration Level increases enemy difficulty, but also boosts the amount of Valley Stock Bills and experience gained. To increase your Exploration Level, complete Main Quests and Side Missions.
Obtainable Protocol Space First-Time Rewards

You can also obtain Valley Stock Bills as a first-time reward from Menu -> Operation Manual -> Index -> Energy Alluvium.
Uses and Priority for Valley Stock Bills
Valley Stock Bill Exchange Priority
| Use | Priority |
| ▼Stock Redistribution | ★★★★★ You can increase your bills through trading Goods. |
| ▼Automated Industry Complex (AIC) Expansion | ★★★★・ When the Automated Industry Complex (AIC) Area Becomes Crowded |
| ▼Upgrading Facilities, etc. | ★★★・・ Prioritize Facility Leveling and Upgrades |
| ▼Gear Assembly | ★★・・・ Increase Combat Effectiveness |
| ▼Purchasing at Shops, etc. | ★・・・・ |
Goods Trading should be a top priority, as it allows you to spend Valley Stock Bills to generate even more Valley Stock Bills. While optimizing Production Lines in the Automated Industry Complex (AIC), focus on leveling facilities such as the Recycle Station, Stocks Redistribution Terminal, and Depot Node. If you are struggling with character progression, Equipment Manufacturing is also recommended.
Regional Development 'Stock Redistribution'

In the 'Stock Redistribution' section of Regional Development, you can check the Friend's Price and earn bills from the price difference. Since you need bills to start, make sure to save some funds for Stock Redistribution.
Automated Industry Complex (AIC) Expansion

| Details | A special stock bill used in Valley IV. It can only be spent within this region and serves multiple purposes. |
It is used in key functions such as expanding the Automated Industry Complex (AIC). Be sure to collect them consistently.
Automated Industry Complex (AIC) Guide
Upgrading Facilities, etc.

It is also required for certain upgrades, such as leveling up the Recycle Station, Stock Redistribution Terminal, and Depot Node.
Gear Assembly

When crafting gear, Valley Stock Bills are consumed along with other materials.
Purchasing at Shops, etc.

You can purchase items at the Lucky Carrot shop and other stores, including Progression Materials.
Valley Stock Bills Change by Region
Stock Bill Types Change with Progress
Valley Stock Bills are a currency used exclusively in the Valley IV area. As you progress through the game and move to other regions, such as Wuling, different currencies are required, and Valley Stock Bills cannot be used outside their designated region.
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