BlackRock
RBBN icon

BlackRock’s Ribbon Communications RBBN Stock Holding History

BlackRock’s Portfolio RBBN Stock Details RBBN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$14.3M Sell
6,724,007
-941,918
-12% -$2.25M ﹤0.01% 3276
2025
Q4 		$22.1M Sell
7,665,925
-32,880
-0.4% -$106K ﹤0.01% 3044
2025
Q3 		$29.3M Sell
7,698,805
-40,030
-0.5% -$157K ﹤0.01% 2850
2025
Q2 		$31M Sell
7,738,835
-50,070
-0.6% -$180K ﹤0.01% 2764
2025
Q1 		$30.5M Sell
7,788,905
-1,556
-0% -$6.56K ﹤0.01% 2683
2024
Q4 		$32.4M Buy
7,790,461
+108,702
+1% +$410K ﹤0.01% 2734
2024
Q3 		$25M Buy
7,681,759
+297,825
+4% +$966K ﹤0.01% 2891
2024
Q2 		$24.3M Buy
7,383,934
+186,328
+3% +$567K ﹤0.01% 2856
2024
Q1 		$23M Sell
7,197,606
-362,693
-5% -$1.1M ﹤0.01% 2908
2023
Q4 		$21.9M Buy
7,560,299
+298,995
+4% +$674K ﹤0.01% 2969
2023
Q3 		$19.5M Buy
7,261,304
+53,256
+0.7% +$156K ﹤0.01% 2958
2023
Q2 		$20.1M Buy
7,208,048
+1,098,904
+18% +$3.05M ﹤0.01% 3038
2023
Q1 		$20.9M Buy
6,109,144
+129,622
+2% +$474K ﹤0.01% 2950
2022
Q4 		$16.7M Buy
5,979,522
+794,803
+15% +$2.06M ﹤0.01% 3131
2022
Q3 		$11.5M Sell
5,184,719
-688,629
-12% -$2.18M ﹤0.01% 3353
2022
Q2 		$17.9M Sell
5,873,348
-776,641
-12% -$2.35M ﹤0.01% 3143
2022
Q1 		$20.5M Buy
6,649,989
+80,750
+1% +$331K ﹤0.01% 3155
2021
Q4 		$39.7M Buy
6,569,239
+138,234
+2% +$820K ﹤0.01% 2812
2021
Q3 		$38.5M Sell
6,431,005
-155,573
-2% -$1.05M ﹤0.01% 2836
2021
Q2 		$50.1M Sell
6,586,578
-145,601
-2% -$1.11M ﹤0.01% 2701
2021
Q1 		$55.3M Buy
6,732,179
+616,448
+10% +$5.1M ﹤0.01% 2548
2020
Q4 		$40.1M Buy
6,115,731
+432,188
+8% +$2.28M ﹤0.01% 2604
2020
Q3 		$22M Buy
5,683,543
+316,024
+6% +$1.33M ﹤0.01% 2807
2020
Q2 		$21.1M Buy
5,367,519
+1,070,467
+25% +$3.89M ﹤0.01% 2768
2020
Q1 		$13M Buy
4,297,052
+51,511
+1% +$155K ﹤0.01% 2853
2019
Q4 		$13.2M Buy
4,245,541
+169,743
+4% +$676K ﹤0.01% 3111
2019
Q3 		$23.8M Buy
4,075,798
+119,299
+3% +$627K ﹤0.01% 2720
2019
Q2 		$19.3M Buy
3,956,499
+98,365
+3% +$480K ﹤0.01% 2856
2019
Q1 		$19.9M Sell
3,858,134
-187,267
-5% -$1M ﹤0.01% 2756
2018
Q4 		$19.5M Buy
4,045,401
+479,112
+13% +$2.78M ﹤0.01% 2731
2018
Q3 		$24.4M Buy
3,566,289
+26,211
+0.7% +$187K ﹤0.01% 2757
2018
Q2 		$25.2M Buy
3,540,078
+369,210
+12% +$2.16M ﹤0.01% 2731
2018
Q1 		$16.2M Sell
3,170,868
-11,385
-0.4% -$73.7K ﹤0.01% 2881
2017
Q4 		$24.6M Buy
3,182,253
+47,663
+2% +$366K ﹤0.01% 2675
2017
Q3 		$24M Buy
3,134,590
+23,054
+0.7% +$165K ﹤0.01% 2698
2017
Q2 		$23.1M Sell
3,111,536
-8,362
-0.3% -$61.6K ﹤0.01% 2710
2017
Q1 		$20.6M Buy
3,119,898
+3,109,028
+28,602% +$19.7M ﹤0.01% 2746
2016
Q4 		$69K Sell
10,870
-1,019
-9% -$6.69K ﹤0.01% 2773
2016
Q3 		$93K Hold
11,889
– – ﹤0.01% 2636
2016
Q2 		$103K Buy
11,889
+7,344
+162% +$61.2K ﹤0.01% 2520
2016
Q1 		$34K Buy
4,545
+57
+1% +$381 ﹤0.01% 2573
2015
Q4 		$32K Sell
4,488
-500
-10% -$3.35K ﹤0.01% 2330
2015
Q3 		$29K Buy
4,988
+3,600
+259% +$24.3K ﹤0.01% 2169
2015
Q2 		$10K Hold
1,388
– – ﹤0.01% 2798
2015
Q1 		$11K Sell
1,388
-1
-0.1% -$16 ﹤0.01% 2688
2014
Q4 		$27K Hold
1,389
– – ﹤0.01% 2225
2014
Q3 		$24K Hold
1,389
– – ﹤0.01% 2246
2014
Q2 		$25K Buy
1,389
+42
+3% +$710 ﹤0.01% 2266
2014
Q1 		$22K Hold
1,347
– – ﹤0.01% 2314
2013
Q4 		$21K Hold
1,347
– – ﹤0.01% 2343
2013
Q3 		$22K Hold
1,347
– – ﹤0.01% 2236
2013
Q2 		$20K Buy
+1,347
New +$18K ﹤0.01% 2303

Other funds holding RBBN

JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return
PCMI
Paradigm Capital Management Inc Albany, New York $2.61B AUM 78.58% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
RA
Royce & Associates New York $10.1B AUM 42.88% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Connor, Clark & Lunn Investment Management (CC&L)
Connor, Clark & Lunn Investment Management (CC&L) Vancouver, British Columbia, Canada $43.4B AUM 51.29% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

BlackRock's RBBN Position: Q1 2026 in Review

BlackRock reduced its Ribbon Communications (RBBN) stake by 12% in Q1 2026, selling an estimated $2.25M and leaving 6,724,007 shares worth $14.3M. The position accounts for ﹤0.01% of the portfolio, ranked #3276.

BlackRock first reported a position in RBBN in Q2 2013 and has held it in 52 quarters since. The position peaked at $55.3M in Q1 2021. 150 funds tracked by Wall St. Rank hold RBBN as of Q1 2026.

  • BlackRock held 6,724,007 shares of Ribbon Communications worth $14.3M as of Q1 2026.
  • BlackRock sold 941,918 Ribbon Communications shares in Q1 2026, an estimated $2.25M.
  • Ribbon Communications made up ﹤0.01% of BlackRock's portfolio in Q1 2026, its #3276 holding.
  • BlackRock first reported a position in Ribbon Communications in Q2 2013 and has held it in 52 quarters since.
  • BlackRock's Ribbon Communications position peaked at $55.3M in Q1 2021.
  • 150 funds tracked by Wall St. Rank held Ribbon Communications as of Q1 2026.

Based on BlackRock's 13F filing for Q1 2026, filed 13 May 2026.