What is the StonkWhisper Whisper Index?

The Whisper Index is StonkWhisper's proprietary market sentiment score (0–90) that aggregates retail investor discussion velocity, volume, and sentiment across Reddit, StockTwits, and other social platforms for 500+ U.S. equities in real time.

What is dark pool trading and why does it matter for stock analysis?

Dark pools are off-exchange trading venues where large institutional orders execute away from public markets. StonkWhisper tracks FINRA-reported dark pool volume to identify unusual institutional accumulation or distribution that may precede significant price moves.

How does StonkWhisper track congressional stock trades?

The STOCK Act requires U.S. Congress members to disclose personal stock trades within 45 days. StonkWhisper monitors these mandatory disclosures in near real-time, surfacing trades by legislators who may have non-public information advantages.

American Century decreased BWXT position by 269,416 shares

Mar 28, 2026Last updated Jul 9, 2026

This StonkWhisper whale intelligence report documents significant institutional position changes in $BWXT based on SEC 13F filings and block-level trading data. Quarterly 13F disclosures are required for institutional investment managers with at least $100 million in qualifying assets under management. These filings reveal long positions in U.S. equities held as of quarter end. Material changes in institutional positioning — particularly from concentrated funds with a history of high-conviction bets — are tracked by StonkWhisper as leading indicators of institutional thesis formation or exit.

AMERICAN CENTURY COMPANIES INC AUM: $194.3B DECREASED

AUM: $194.3B · 2,830 holdings · Period: 2025-12-31

269,416 Share Change

302,032 Current Shares

$52.2B Current Value

0.03% Portfolio %

-47.2% Change %

Position Change Detail

Issuer BWX TECHNOLOGIES INC

Ticker BWXT

Shares 571,448 → 302,032 269,416

Value $105.4B → $52.2B

Portfolio Weight 0.03%

Change Type Decreased

Period of Report 2025-12-31

Other American Century Positions This Period

Ticker	Issuer	Change Type	Share Change	Value
KOS	KOSMOS ENERGY LTD	Decreased	19,075,012	$10.3B
NFLX	NETFLIX INC	Increased	+15,804,792	$1642.0B
KVUE	KENVUE INC	Decreased	10,309,137	$461.2B
T	AT&T INC	Decreased	6,329,511	$98.5B
FNB	F N B CORP	Decreased	5,985,954	$42.8B
GFL	GFL ENVIRONMENTAL INC	Decreased	5,025,075	$42.9B
VICI	VICI PPTYS INC	Decreased	4,649,026	$68.4B
MARA	MARA HOLDINGS INC	Decreased	4,372,799	$2.2B
UAA	UNDER ARMOUR INC	Decreased	3,552,342	$2.3B
APH	AMPHENOL CORP NEW	Increased	+3,437,013	$788.3B

Other Whales Moving BWXT This Period

Manager	Change Type	Share Change
Alkeon	Decreased	1,057,496
Two Sigma	Increased	+379,676
Tremblant	New	+291,174
Select Equity	Decreased	277,002
Balyasny	Decreased	165,284
William Blair	Decreased	147,710
Point72	New	+121,100
Jennison	Increased	+120,409
Arrowstreet	Increased	+102,444
Artisan Partners	Decreased	97,234

View all sentiment, news, and whale activity for BWXT (BWX TECHNOLOGIES INC).

Track American Century and other whale moves in real time on The Wire →

Get alerts when new 13F filings drop — Go Pro →

Data sourced from SEC 13F institutional holdings filings. This page does not constitute financial advice. StonkWhisper presents public records — it does not verify or guarantee the accuracy of institutional filings. 13F filings are reported quarterly and may lag actual positions.

Last updated: July 09, 2026 at 06:02 UTC