American Century Companies
SIBN icon

American Century Companies’s SI-BONE Inc SIBN Stock Holding History

American Century Companies’s Portfolio SIBN Stock Details SIBN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$41M Buy
2,510,963
+1,898
+0.1% +$27.1K 0.02% 951
2026
Q1 		$31.7M Buy
2,509,065
+208,557
+9% +$3.26M 0.02% 966
2025
Q4 		$45.4M Sell
2,300,508
-537,599
-19% -$9.34M 0.02% 764
2025
Q3 		$41.8M Buy
2,838,107
+521,683
+23% +$8.52M 0.02% 790
2025
Q2 		$43.6M Sell
2,316,424
-325,898
-12% -$5.4M 0.02% 737
2025
Q1 		$37.1M Buy
2,642,322
+264,254
+11% +$4.26M 0.02% 752
2024
Q4 		$33.3M Buy
2,378,068
+236,167
+11% +$3.18M 0.02% 803
2024
Q3 		$29.9M Buy
2,141,901
+155,425
+8% +$2.34M 0.02% 843
2024
Q2 		$25.7M Buy
1,986,476
+368,637
+23% +$5.27M 0.02% 841
2024
Q1 		$26.5M Buy
1,617,839
+438,315
+37% +$8.25M 0.02% 821
2023
Q4 		$24.8M Buy
+1,179,524
New +$21.8M 0.02% 795
2023
Q2 		– Sell
-832,980
Closed -$16.4M – 2836
2023
Q1 		$16.4M Sell
832,980
-254,566
-23% -$4.52M 0.01% 832
2022
Q4 		$14.8M Sell
1,087,546
-6,498
-0.6% -$94.7K 0.01% 829
2022
Q3 		$19.1M Buy
1,094,044
+93,719
+9% +$1.5M 0.02% 674
2022
Q2 		$13.2M Buy
1,000,325
+69,305
+7% +$1.15M 0.01% 814
2022
Q1 		$21M Buy
931,020
+24,854
+3% +$516K 0.01% 680
2021
Q4 		$20.1M Sell
906,166
-100,843
-10% -$2.17M 0.01% 700
2021
Q3 		$21.6M Buy
1,007,009
+760,836
+309% +$19.3M 0.01% 658
2021
Q2 		$7.75M Sell
246,173
-5,496
-2% -$178K 0.01% 885
2021
Q1 		$8.01M Buy
251,669
+26,857
+12% +$826K 0.01% 828
2020
Q4 		$6.72M Buy
224,812
+8,448
+4% +$206K 0.01% 836
2020
Q3 		$5.13M Buy
216,364
+45,101
+26% +$896K ﹤0.01% 803
2020
Q2 		$2.73M Buy
171,263
+100,953
+144% +$1.59M ﹤0.01% 846
2020
Q1 		$840K Buy
70,310
+16,583
+31% +$305K ﹤0.01% 1026
2019
Q4 		$1.16M Buy
53,727
+16,547
+45% +$297K ﹤0.01% 1076
2019
Q3 		$657K Buy
+37,180
New +$712K ﹤0.01% 1064

Other funds holding SIBN

FLAM
First Light Asset Management Edina, Minnesota $1.65B AUM 203.21% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
CCM
Cadian Capital Management New York $1.32B AUM 4.19% 1-Year Est. Return
Brown Advisory
Brown Advisory Baltimore, Maryland $64.6B AUM 18.98% 1-Year Est. Return
GIM
Granahan Investment Management Waltham, Massachusetts $2.81B AUM 83.9% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Impax Asset Management Group
Impax Asset Management Group London, United Kingdom $15.4B AUM 26.43% 1-Year Est. Return
GGHC
Gilder Gagnon Howe & Co New York $9.69B AUM 55.7% 1-Year Est. Return
PCMI
Paradigm Capital Management Inc Albany, New York $3.67B AUM 121.12% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

American Century Companies's SIBN Position: Q2 2026 in Review

American Century Companies increased its SI-BONE Inc (SIBN) stake by 0.08% in Q2 2026, buying an estimated $27.1K and bringing the position to 2,510,963 shares worth $41M. The position accounts for 0.02% of the portfolio, ranked #951.

American Century Companies first reported a position in SIBN in Q3 2019 and has held it in 26 quarters since. The position peaked at $45.4M in Q4 2025. 168 funds tracked by Wall St. Rank hold SIBN as of Q2 2026.

  • American Century Companies held 2,510,963 shares of SI-BONE Inc worth $41M as of Q2 2026.
  • American Century Companies bought 1,898 SI-BONE Inc shares in Q2 2026, an estimated $27.1K.
  • SI-BONE Inc made up 0.02% of American Century Companies's portfolio in Q2 2026, its #951 holding.
  • American Century Companies first reported a position in SI-BONE Inc in Q3 2019 and has held it in 26 quarters since.
  • American Century Companies's SI-BONE Inc position peaked at $45.4M in Q4 2025.
  • 168 funds tracked by Wall St. Rank held SI-BONE Inc as of Q2 2026.

Based on American Century Companies's 13F filing for Q2 2026, filed 12 Aug 2026.