Reliance, Inc.
MX ˙ BMV ˙ US7595091023
SecurityMX:RS / Reliance, Inc.
InstitutionBoston Partners
Latest Disclosed Ownership2,110,934 shares
Latest Disclosed Value $ 641,659,301
Boston Partners reports 3.52% decrease in ownership of RS / Reliance, Inc.

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 2,110,934 shares of Reliance, Inc. (MX:RS) valued at $641,659,301 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,187,940 shares of Reliance, Inc.. This represents a change in shares of -3.52% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F RELIANCE COM 759509102 2,110,934 -77,006 -3.52 641,659 1.31 0.2872
2026-02-13 2025-12-31 13F RELIANCE COM 759509102 2,187,940 -59,663 -2.65 633,341 0.34 0.6557
2025-11-13 2025-09-30 13F RELIANCE COM 759509102 2,247,603 484,286 27.46 631,224 14.26 0.6481
2025-08-12 2025-06-30 13F/A-1 RELIANCE COM 759509102 1,763,317 741,417 72.55 552,461 87.24 0.6135
2025-08-07 2025-06-30 13F RELIANCE COM 759509102 1,761,754 739,854 551,971 0.2534
2025-05-13 2025-03-31 13F RELIANCE COM 759509102 1,021,900 305,620 42.67 295,052 52.96 0.3568
2025-02-11 2024-12-31 13F RELIANCE COM 759509102 716,280 50,528 7.59 192,894 0.18 0.2346
2024-11-12 2024-09-30 13F RELIANCE COM 759509102 665,752 665,752 192,553 0.2273
2017-08-02 2017-06-30 13F RELIANCE STEEL & ALUMINUM COM 759509102 0 -168,634 -100.00 0 -100.00
2017-05-03 2017-03-31 13F RELIANCE STEEL & ALUMINUM COM 759509102 168,634 11,894 7.59 13,494 8.24 0.0172
2017-02-06 2016-12-31 13F RELIANCE STEEL & ALUMINUM COM 759509102 156,740 107,991 221.52 12,467 255.08 0.0164
2016-11-09 2016-09-30 13F RELIANCE STEEL & ALUMINUM COM 759509102 48,749 0 0.00 3,511 -6.35 0.0049
2016-08-05 2016-06-30 13F RELIANCE STEEL & ALUMINUM COM 759509102 48,749 -5,333 -9.86 3,749 0.19 0.0054
2016-05-12 2016-03-31 13F RELIANCE STEEL & ALUMINUM COM 759509102 54,082 -10,116 -15.76 3,742 0.65 0.0055
2016-02-08 2015-12-31 13F RELIANCE STEEL & ALUMINUM COM 759509102 64,198 -10,202 -13.71 3,718 -7.47 0.0053
2015-11-10 2015-09-30 13F RELIANCE STEEL & ALUMINUM COM 759509102 74,400 -21,132 -22.12 4,018 -30.46 0.0061
2015-08-10 2015-06-30 13F RELIANCE STEEL & ALUMINUM COM 759509102 95,532 0 0.00 5,778 -0.98 0.0083
2015-05-05 2015-03-31 13F RELIANCE STEEL & ALUMINUM COM 759509102 95,532 -48,260 -33.56 5,835 -33.77 0.0087
2015-02-09 2014-12-31 13F RELIANCE STEEL & ALUMINUM COM 759509102 143,792 0 0.00 8,810 -10.42 0.0132
2014-11-12 2014-09-30 13F RELIANCE STEEL & ALUMINUM COM 759509102 143,792 143,792 9,835 0.0160
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.