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Last update: Jun 30, 2026, 3:54 AM ET

Costco Wholesale Corporation (COST) — What Changed

$946.68-5.86 (-0.62%) vs yesterday's close
Jun 30, 2026 5:04 AM ET·NASDAQ Global Select·Pre-market·CEO: Ron Vachris·333,000 employees

Costco Wholesale Corporation, alongside its group entities, operates membership-based retail warehouses across a broad international scope, spanning the United States, Puerto Rico, Canada, the United

🔔Material Change Detected
Market Cap
$419.8B
Sector
Consumer Defensive
Discount Stores
Next Earnings
Sep 23, 2026
(86 Days)
Relative Volume
0.93x
Below Avg
Risk Level
Low
Price Move
-0.62%
1-Day Change
Below 5D Avg: 0.3%
Volume Confirmation
0.93x
vs 30D Average
Below Avg
Catalyst
Filings
Filings
Costco Wholesale Corporation (COST) filed its quarterly 10-Q on June 3, 2026.…
Peer Context
Underperforming
Top 4 of 6 peers
Sector-Wide Move
Signal Quality
Weak
Confidence Score
37/100

BestStocks surfaces only meaningful changes—backed by price, volume, catalysts, and peer context—so you can focus on what matters.

1Event Reaction Chart
Price reaction around a key event
COSTCostco Wholesale Corporation$946.68-5.86 (-0.62%)
940.36946.02951.68957.35963.01Price (USD)Jun 23Jun 24Jun 25Jun 26Jun 29946.68
Price Move Up·Jun 26, 2026·+1.09% reaction

1. What Changed Since Last Close

V
Price Move UpLowLow
Jun 26+1.09%2.48x vol

Costco Wholesale moved +1.09% from $942.24 to $952.54 on 2026-06-26 on volume 3.2x the 5-day average. We checked news, e

V
Price Move DownLowLow
Jun 25-1.96%0.75x vol

Costco Wholesale moved -1.96% from $961.09 to $942.24 on 2026-06-25, reaching a new 30-day low. We checked news, earning

F
New FilingHighHigh
Jun 3

Costco Wholesale Corporation (COST) filed its quarterly 10-Q on June 3, 2026. No price movement was recorded on or aroun

F
New FilingHighHigh
Jun 3

Costco Wholesale Corporation (COST) filed its 10-Q quarterly report on 2026-06-03. The stock showed no price movement on

Showing 4 of 4 events

2. Change Timeline

DateChangePrice Reaction Volume Confidence
Jun 3
FNew Filing
High
Jun 3
FNew Filing
High
Jun 26
VPrice Move Up
+1.09%2.48xLow
Jun 25
VPrice Move Down
-1.96%0.75xLow
Sort:  

3. Why It Moved

1
Primary Catalyst
Filings
Costco Wholesale Corporation (COST) filed its quarterly 10-Q on June 3, 2026. No
2
Supporting Evidence
  • Costco Wholesale moved +1.09% from $942.24 to $952.54 on 2026-06-26 on
  • Costco Wholesale moved -1.96% from $961.09 to $942.24 on 2026-06-25, r
3
Nature of Move
Sector-Wide Move
COST moved broadly in line with sector peers — consistent with a sector or macro-driven event.

4. Peer / Sector Confirmation

SymbolToday5DRel. Vol
COST-0.62%0.93xLagging
WMT-0.94%
PG-0.41%
KO+0.02%
PEP-1.92%
MCD-0.96%
Sector-Wide Move. Top 4 of 6 peers. COST is underperforming relative to sector peers — consistent with a sector or macro event.

5. SEC Filing Watch

Jun 3Medium
Quarterly financial results
May 28High
Material event — review for impact
Apr 15High
Material event — review for impact
Mar 11Medium
Quarterly financial results
Mar 5High
Material event — review for impact
View on SEC EDGAR →Source: filing_snapshots DB · past 120 days

6. Analyst Expectations

Consensus Target
$1,110.75
Median Target
$1,100.00
Upside to Target
+17.3%
vs $946.68
Analyst Activity — Last 90 Days
0
Upgrades
12
Maintains
0
Downgrades
Last Directional Actions
↑ Upgrade
Mizuho · NeutralOutperform
Jan 5, 2026
↓ Downgrade
Roth Capital · NeutralSell
Dec 15, 2025

7. Bull vs Bear Thesis Shift

Bullish Factors
Costco Wholesale moved +1.09% from $942.24 to $952.54 on 202
Costco Wholesale moved -1.96% from $961.09 to $942.24 on 202
Bearish Factors
Negative session, down 0.6%
New SEC filing — review for material disclosures
New SEC filing — review for material disclosures
Net Thesis Change vs Yesterday
BearishNeutralBullish
Neutral / Mixed-8 / 100

8. What To Watch Next

DateEventImpact
Sep 2est.10-Q FilingMedium
Sep 24Earnings ReleaseHigh
est. = estimated from prior filing cycle
🔔
9. Set Alerts & Get Notified
Get notified when COST reports earnings, files an 8-K, receives an analyst upgrade, or sees unusual volume.
Earnings alerts
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Volume spikes
Analyst actions

Educational research tool — not personalized investment advice. Data may be delayed.