PIA CORPORATION 4337Short Interest

Estimated short interest in PIA CORPORATION (4337) is 3.21% of shares outstanding as of 2026-09-15. Institutions holding 0.5% or more: Morgan Stanley MUFG Securities Co., Ltd.

Prime Market (Domestic) Services IT & Services, Others TOPIX Small 2
Estimated short interest
3.2100%
▲0.0900%
Estimated position (shares)
501,488
As of 2026-09-15
Short sellers
5 firms
171 reports

Short Interest Trend By institution, % of shares outstanding

Estimated short interest, stacking the latest reported position of each short seller. The 5 largest current holders are shown in color and the rest are grouped as "Others". Hover over (or tap) a bar to see the breakdown.

  • Morgan Stanley MUFG Securities Co., Ltd.
  • GOLDMAN SACHS INTERNATIONAL
  • UBS AG
  • MERRILL LYNCH INTERNATIONAL
  • Nomura International plc
3.2100%
Estimated short interest, 2026-09-15
Nomura International plc0.45%
MERRILL LYNCH INTERNATIONAL0.48%
UBS AG0.49%
GOLDMAN SACHS INTERNATIONAL0.49%
Morgan Stanley MUFG Securities Co., Ltd.1.30%

Current Positions by Short Seller Latest report of each holder

Last report Short seller Position (shares) Ratio Change Status
2026-09-15 Morgan Stanley MUFG Securities Co., Ltd. Position 204,177 shares Ratio 1.3000% ▲0.0900% Holding
2020-11-02 GOLDMAN SACHS INTERNATIONAL Position 72,787 shares Ratio 0.4900% ▼0.0301% Below 0.5%
2026-03-10 UBS AG Position 77,879 shares Ratio 0.4900% ▼0.0101% Below 0.5%
2026-08-20 MERRILL LYNCH INTERNATIONAL Position 75,765 shares Ratio 0.4800% ▼0.0301% Below 0.5%
2026-07-10 Nomura International plc Position 70,880 shares Ratio 0.4500% ▼0.1200% Below 0.5%

Disclosure History 171 in total

Trade date Short seller Position (shares) Ratio Change Note
2026-09-15 Morgan Stanley MUFG Securities Co., Ltd. Position 204,177 shares Ratio 1.3000% ▲0.0900% —
2026-09-07 Morgan Stanley MUFG Securities Co., Ltd. Position 190,377 shares Ratio 1.2100% ▲0.0800% —
2026-08-27 Morgan Stanley MUFG Securities Co., Ltd. Position 177,877 shares Ratio 1.1300% ▲0.0599% —
2026-08-25 Morgan Stanley MUFG Securities Co., Ltd. Position 168,777 shares Ratio 1.0700% ▼0.3200% —
2026-08-20 MERRILL LYNCH INTERNATIONAL Position 75,765 shares Ratio 0.4800% ▼0.0301% Below 0.5%
2026-08-19 MERRILL LYNCH INTERNATIONAL Position 80,565 shares Ratio 0.5100% ▼0.0201% —
2026-08-18 MERRILL LYNCH INTERNATIONAL Position 84,465 shares Ratio 0.5300% ▼0.0101% —
2026-08-17 MERRILL LYNCH INTERNATIONAL Position 85,265 shares Ratio 0.5400% ▼0.0400% —
2026-08-17 Morgan Stanley MUFG Securities Co., Ltd. Position 218,977 shares Ratio 1.3900% ▼0.0101% —
2026-08-14 MERRILL LYNCH INTERNATIONAL Position 91,365 shares Ratio 0.5800% ▲0.0299% —
2026-08-14 Morgan Stanley MUFG Securities Co., Ltd. Position 219,777 shares Ratio 1.4000% ▲0.0100% —
2026-08-13 MERRILL LYNCH INTERNATIONAL Position 86,665 shares Ratio 0.5500% ▼0.0200% —
2026-08-13 Morgan Stanley MUFG Securities Co., Ltd. Position 218,877 shares Ratio 1.3900% ▼0.0701% —
2026-08-12 MERRILL LYNCH INTERNATIONAL Position 90,665 shares Ratio 0.5700% ▼0.0201% —
2026-08-07 Morgan Stanley MUFG Securities Co., Ltd. Position 228,977 shares Ratio 1.4600% ▼0.0501% —
2026-08-05 MERRILL LYNCH INTERNATIONAL Position 93,965 shares Ratio 0.5900% ▲0.0499% —
2026-08-03 MERRILL LYNCH INTERNATIONAL Position 85,565 shares Ratio 0.5400% ▲0.0100% —
2026-07-30 MERRILL LYNCH INTERNATIONAL Position 84,165 shares Ratio 0.5300% ▼0.0101% —
2026-07-30 Morgan Stanley MUFG Securities Co., Ltd. Position 236,877 shares Ratio 1.5100% ▲0.0200% —
2026-07-29 MERRILL LYNCH INTERNATIONAL Position 84,765 shares Ratio 0.5400% ▼0.0300% —
2026-07-24 MERRILL LYNCH INTERNATIONAL Position 90,465 shares Ratio 0.5700% ▲0.0099% —
2026-07-23 MERRILL LYNCH INTERNATIONAL Position 89,165 shares Ratio 0.5600% ▲0.0100% —
2026-07-22 MERRILL LYNCH INTERNATIONAL Position 87,565 shares Ratio 0.5500% ▲0.0100% —
2026-07-16 MERRILL LYNCH INTERNATIONAL Position 85,665 shares Ratio 0.5400% ▲0.0100% —
2026-07-15 MERRILL LYNCH INTERNATIONAL Position 84,565 shares Ratio 0.5300% ▲0.0100% —
2026-07-10 Nomura International plc Position 70,880 shares Ratio 0.4500% ▼0.1200% Below 0.5%
2026-07-09 MERRILL LYNCH INTERNATIONAL Position 81,965 shares Ratio 0.5200% ▲0.0100% —
2026-07-08 MERRILL LYNCH INTERNATIONAL Position 81,265 shares Ratio 0.5100% ▼0.0101% —
2026-07-07 MERRILL LYNCH INTERNATIONAL Position 81,965 shares Ratio 0.5200% ▼0.0101% —
2026-07-06 MERRILL LYNCH INTERNATIONAL Position 83,165 shares Ratio 0.5300% ▼0.0101% —

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