Sigma Planning Corp
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Sigma Planning Corp’s Western Digital WDC Stock Holding History

Sigma Planning Corp’s Portfolio WDC Stock Details WDC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		$269K Sell
591
-111
-16% -$54K 0.01% 1106
2026
Q2 		$448K Buy
+702
New +$341K 0.01% 967
2022
Q2 		– Sell
-5,861
Closed -$220K – 1446
2022
Q1 		$220K Buy
5,861
+463
+9% +$19K 0.01% 1203
2021
Q4 		$266K Buy
5,398
+615
+13% +$26.7K 0.01% 1148
2021
Q3 		$204K Sell
4,783
-926
-16% -$44K 0.01% 1263
2021
Q2 		$307K Sell
5,709
-407
-7% -$22K 0.01% 1069
2021
Q1 		$309K Buy
6,116
+661
+12% +$30.9K 0.01% 973
2020
Q4 		$228K Buy
+5,455
New +$181K 0.01% 1036
2020
Q3 		– Sell
-25,369
Closed -$847K – 1169
2020
Q2 		$847K Buy
25,369
+5,091
+25% +$165K 0.04% 435
2020
Q1 		$638K Sell
20,278
-8,468
-29% -$375K 0.04% 418
2019
Q4 		$1.38M Buy
28,746
+6,043
+27% +$252K 0.06% 329
2019
Q3 		$1.02M Buy
22,703
+301
+1% +$12.8K 0.05% 365
2019
Q2 		$805K Buy
22,402
+4,978
+29% +$171K 0.04% 400
2019
Q1 		$633K Buy
17,424
+8,085
+87% +$277K 0.04% 445
2018
Q4 		$261K Buy
+9,339
New +$331K 0.02% 660
2018
Q3 		– Sell
-4,104
Closed -$240K – 1008
2018
Q2 		$240K Sell
4,104
-100
-2% -$6.36K 0.02% 749
2018
Q1 		$293K Buy
4,204
+89
+2% +$5.99K 0.02% 617
2017
Q4 		$247K Sell
4,115
-407
-9% -$26.2K 0.02% 687
2017
Q3 		$295K Buy
4,522
+138
+3% +$9.16K 0.02% 615
2017
Q2 		$294K Hold
4,384
– – 0.03% 581
2017
Q1 		$274K Buy
4,384
+463
+12% +$26.6K 0.03% 602
2016
Q4 		$201K Buy
+3,921
New +$181K 0.02% 646

Other funds holding WDC

AMF Tjänstepension
AMF Tjänstepension Stockholm, Sweden $17.2B AUM 28.3% 1-Year Est. Return
Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $83.2B AUM 35.34% 1-Year Est. Return
AssetMark Inc
AssetMark Inc Concord, California $59.5B AUM 15.92% 1-Year Est. Return
Wealth Enhancement Advisory Services
Wealth Enhancement Advisory Services Plymouth, Minnesota $67.3B AUM 21.9% 1-Year Est. Return
New York State Teachers Retirement System (NYSTRS)
New York State Teachers Retirement System (NYSTRS) Albany, New York $52.9B AUM 36.03% 1-Year Est. Return
Cardano Risk Management
Cardano Risk Management Rotterdam, Netherlands $18.2B AUM 38.97% 1-Year Est. Return
Parnassus Investments
Parnassus Investments San Francisco, California $33.8B AUM 31.08% 1-Year Est. Return
BI Asset Management Fondsmaeglerselskab
BI Asset Management Fondsmaeglerselskab Kobenhavn, Denmark $13.1B AUM 35.37% 1-Year Est. Return
KBC Group
KBC Group Brussels, Belgium $47.9B AUM 37.61% 1-Year Est. Return
Fjarde Ap-fonden
Fjarde Ap-fonden Stockholm, Sweden $19.4B AUM 31.69% 1-Year Est. Return

Sigma Planning Corp's WDC Position: Q3 2026 in Review

Sigma Planning Corp reduced its Western Digital (WDC) stake by 16% in Q3 2026, selling an estimated $54K and leaving 591 shares worth $269K. The position accounts for 0.01% of the portfolio, ranked #1106.

Sigma Planning Corp first reported a position in WDC in Q4 2016 and has held it in 22 quarters since. The position peaked at $1.38M in Q4 2019. 429 funds tracked by Wall St. Rank hold WDC as of Q3 2026.

  • Sigma Planning Corp held 591 shares of Western Digital worth $269K as of Q3 2026.
  • Sigma Planning Corp sold 111 Western Digital shares in Q3 2026, an estimated $54K.
  • Western Digital made up 0.01% of Sigma Planning Corp's portfolio in Q3 2026, its #1106 holding.
  • Sigma Planning Corp first reported a position in Western Digital in Q4 2016 and has held it in 22 quarters since.
  • Sigma Planning Corp's Western Digital position peaked at $1.38M in Q4 2019.
  • 429 funds tracked by Wall St. Rank held Western Digital as of Q3 2026.

Based on Sigma Planning Corp's 13F filing for Q3 2026, filed 23 Oct 2026.