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NEXTBack of the House: Inventory Modeling
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Contents
Introduction
Annual Planning
Establishing Model Stock
Take Aways
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How long have you been in run specialty?
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How long have you been in run specialty?
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The Goal
A model inventory, by size and month, for the top 40 men’s and women’s footwear SKUs that maximizes
profitability while minimizing out of stocks.
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Sample Category Distribution-Month 1
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Sample Category Distribution-Month 2
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Month 1
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Month 2
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Retail Planning Cycle
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Retail Planning Cycle
Strategic PlanningCategory StrategyMerchandise
Financial Planning Assortment Planning
PurchasingIn-Season Management
Evaluation Space, Merch Planning
Marketing Plan
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Retail Planning Cycle
Strategic PlanningCategory StrategyMerchandise
Financial Planning Assortment Planning
PurchasingIn-Season Management
Evaluation Space, Merch Planning
Marketing Plan
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Annual Planning: Footwear
Model stock by month, by styleMonthly model inventory by model
and size
Model Stock by Style
Footwear Sales PlanTotal Monthly Sales in $, Units
Turn Target
Footwear Category Plan% of Sales by Category
Styles carriedTurn target by category
Monthly Sales and InventoryUnit and $ sales by month by categoryTarget inventory by month by category
Determining a model stock at the style level requires establishing an overall sales and category plan to ensure appropriate inventory at all levels.
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Inventory Management Considerations: FootwearSuper Performer (>24/month/door) : “A” Styles
• Eliminate out of stocks• At least 2 color options in core sizes (9-12, 7-10),
multiple widths
• Minor in-season adjustments• Two deliveries/month
Core (>8/month/door): “B” Styles
• Eliminate out of stocks• 2 color options in four middle sizes
• Future based on past performance• Fill or correct based on current performance
Secondary (>2/month/doors): “C” Styles
• Limit out of stocks in middle sizes• 1 color option, 1 width• Do no fill in last 2 months of life
• No recurring futures, actively manage to model stock
• Only fill in middle sizes, accept special orders on periphery sizes
Specialty
• Manage based on lifecycle, accept out of stocks at end of life
• Accept special orders
• Fill in as needed in core sizes• Do not fill within 3 months of change except in
middle 2 sizes
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Determining Model Stock
6 Months of sales for top 40 models in each gender2
Inputs
Sales plan by month and category1
Range of unit sales by model and size2
Outputs
Classification by model1
Size Run and Confidence by classification (A,B,C)3
Model Inventory by model and size for the month3
Projected inventory $, Sales $, Margin $, GMROI, and swap sales/special orders by class and gender
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Projected sales, swaps/special orders by model, size, and category
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Input: Annual Sales Plan
Monthly Sales $, Margin $ prior yearMonthly Margin %, Sales %Total Sales
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Input: Category Distribution
Gender % of salesCategory % of sales (for each gender)Average Price by category
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Input: Top 40
Brand, Model, Category, Units Sold, and Unit Cost for each of your top 40 styles within each gender
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Input: Size Runs
Sizes stocked for each class and gender1
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Running The Model
Select a month from the drop down menu.Press “Run Simulation”.
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Output: Totals
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Output: Totals
> Inventory at Cost> Projected GM $> Projected Turns> Projected GMROI
> Sales $> Projected Missed Sales, Switches,
Special Orders> Inventory at Retail
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Inventory Distribution
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Output: Model Inventory
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Customizing Size Runs
Scenario 1> Full size run in all classifications
> Women’s 6-12, Men’s 8-14
Scenario 2> Tapered Size Run in “B” and “C” classification
> A: Women’s 6-12, Men’s 8-14
> B: Women’s 7-11, Men’s 9-13
> C: Women’s 7.5-10, Men’s 9.5-12
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Effect of Size Runs
> Total Inventory @ C: $240,289
> Turns: 3.39
> GMROI: 2.67
> Total Inventory @ C: $191,397 -20%
> Turns: 4.26 +26.5%
> GMROI: 3.35 +25.4%
Scenario 1
Scenario 2
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Output: Missed Sales Example
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Output: Missed Sales Example
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Output: Size Range Tool
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Output: Size Range Tool
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Output: Size Range Tool
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Output: Size Range Tool
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Logic without the tool
> Segment styles into A, B, C classifications based on sales volume> Specialty styles are managed independently
Segment
> Determine size run for each classification, tapering the sizes carried to reduce stock in shoulder and fringe sizes in B and C styles
> Sufficient inventory in A and B styles will ensure that customers always have an option in each category, in each size offered
Size
> Maintain sufficient inventory to achieve near 100% in stock of all “A” styles> Special order B and C fringe/shoulder sizes as necessary> Cut off orders at least 1 month prior to update for “A” and 2 months prior for “B” styles> Place single future orders for “C” styles to establish initial inventory and manage A/O> Train staff to be knowledgeable in segmentation and size availability to facilitate swaps and appropriate
customer service
Maintain
> Implement annual and season planning cycle including category strategy and assortment planning
Plan
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Follow up> Model and presentation available online.
> TheIRRA.com
> KarnanAssociates.com
> Model Webinar
> A 30 minute webinar will be scheduled during December to demonstrate how to load data and run the model. We’ll send details to the IRRA listserve.
> Questions, Comments
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Appendix
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Effect of Size Run TablesScenario 1
Scenario 2
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What Exactly Is It Doing?
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Strategic Value• Strategic value
• What category is this model in?• How many other models are in the category?• Will we carry close substitutes?• Is this a model we carry in widths, multiple colors, or fringe sizes?
• Size Run• Minimum size run of 5• Can we justify carrying additional sizes?• For fringe categories, we can’t offer all options in all sizes.
• Updated Schedule• Cut off replenishment with the goal to sell down before model is
updated• Maximum of 1 month of supply when the new model arrives
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Franchise Styles
Program Monthly
Metrics Exceed Targets
Important but dangerous
Fill or kill
Calendar is king
Niche products
Fill in to model stock
Keep Specialty Special
Strategic products
Taste and chase
Continually reassess
Product Selling Behavior
Change
Volu
me
Low High
Low
High
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Category StrategyDefine Category
Define Role
Evaluation and Scorecard
Strategy
Tactics
Evaluation
What does the category specific include?Ex: Running Shoes includes all running footwear for men and women. Excludes kids and casual shoes.
Traffic driver, convenience, destination for seasonal purchases, a one-stop-shop. Retailers may assign different roles to categories within their stores depending on the customers they want to attract.
What are the metrics and KPIs that will be used to measure the category? What is the category’s current performance? What are the goals for the next season?
What specific actions will we take within this category to meet its goals?Ex: 1 feature per month in the newsletter for a new accessory.Ex: Give 75% of customers a new pair of socks for try-on.
How is the category performing? Were the goals met or exceeded? What tactics were successful? Where was growth or decline above or below expectations?
How will the goals and objectives be met?Ex: Expanding the number of SKUs and brands within bras to grow it into a destination.
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Category Strategy Template
Areas of Growth Areas of Decline
LY Target
Sales
GM %
Turns
Category Definition and Role
Strategies Tactics Key Needs
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In-Season Management: Keep, Kill, or Chase?
Objective of in-season assortment and management is to identify: > Solid performers to keep> Low performers to kill> Best performers to chase
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Inventory Management ProcessDepartment
Category
Class
SKU
Size
• Footwear• Accessories• Apparel
• Inventory versus my target/ideal?• Increase or decrease based on the sales plan?
• Women’s Footwear• Men’s Apparel• Nutrition
• Inventory versus my target/ideal? Am I under or over allocated?• Which category (ies) do I need to investigate?
• Men’s Stability Shoes• Women’s Tops
• Is the allocation correct? • Which classes are over/under performing? • Increase or decrease a class? • Am I positioned for success for the
month/quarter/season?
• Women’s Adrenaline• Men’s Sherpa Short• Mint Chocolate GU
• Over or under the model inventory? • When is the SKU retired/replaced?
• Women’s Adrenaline 8.5• Men’s Sherpa Short M• Mint Chocolate GU 6-
pack
• Complete size runs? • Adequate inventory in middle sizes? • Across the class, and category, are there sufficient
options to meet customer needs?