13F
中
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SRB CORP

13F equity value
$1.6B
Positions
23
Top 10 concentration
67.7%
Quarters / total new picks
26 / 554
13F equity value over time
$0M$958M$2B2017201820192020202120222023202420252026

"13F equity value" = market value of this filer's US-listed long equity positions only. It excludes cash, bonds, non-US and short positions, so it understates a fund's true assets under management — often by a lot.

Not significant Verdict

13F holdings are disclosed ~45 days after quarter-end, and they never reveal when within the quarter a fund actually bought. So any 13F-based summary is structurally late and blurred — this applies to every fund, including this one.

We backtested copying it anyway. Buying this fund's new positions the day each filing went public, over 26 quarters, returned +5.3% per quarter — versus +3.2% per quarter from simply owning every 13F stock. It beat that baseline in only 50.0% of quarters (excess t = 1.00, not statistically significant). Its filings tell you what it bought — not what you should buy.

Avg 2Q excess
+4.4%
t-stat
1.00
Quarterly win rate
50%
Annualized excess
+6.5%
$1 → follow vs universe
$2.93 vs $2.03
Cumulative return: $1 invested in new picks vs universe
1.00 20180331: universe 1.04120180630: universe 0.95920180930: universe 1.00320181231: universe 0.99220190331: universe 0.97520190630: universe 1.04820190930: universe 1.12720191231: universe 0.90920200331: universe 1.09620200630: universe 1.21120200930: universe 1.48520201231: universe 1.55320210331: universe 1.56620210630: universe 1.69220210930: universe 1.51920211231: universe 1.29220220331: universe 1.38720220930: universe 1.49020221231: universe 1.38420230331: universe 1.45920230630: universe 1.40620230930: universe 1.59620231231: universe 1.66820240331: universe 1.70520240630: universe 1.86020250331: universe 2.028 20180331: follow 0.96920180630: follow 0.93520180930: follow 0.96720181231: follow 0.94920190331: follow 0.94620190630: follow 1.07120190930: follow 1.09320191231: follow 0.92820200331: follow 1.06520200630: follow 1.22720200930: follow 1.34720201231: follow 1.53220210331: follow 1.61420210630: follow 1.62520210930: follow 1.61520211231: follow 1.44920220331: follow 1.37320220930: follow 1.40020221231: follow 1.30720230331: follow 1.38820230630: follow 1.29120230930: follow 1.35720231231: follow 1.39920240331: follow 1.39820240630: follow 2.47720250331: follow 2.932 0.84 2.00 3.17 20182019202020212022202320242025 Follow Universe

Quarterly compounding, invested quarters only · entry 47 days after quarter-end (when 13F data becomes public)

Listed as facts. See the verdict above before treating this as signal.

Top 20 holdings of 23 · 2026 Q1

Ticker Value Weight QoQ
MSFT $213M
13.1%
TRIM
SAFT $130M
8.0%
TRIM
RNR $115M
7.1%
TRIM
XLK $113M
7.0%
HOLD
INTC $95M
5.8%
HOLD
AMZN $94M
5.8%
TRIM
XLC $89M
5.5%
HOLD
XLB $86M
5.3%
HOLD
GE $85M
5.2%
TRIM
XLV $82M
5.0%
HOLD
WMT $77M
4.7%
TRIM
GWW $73M
4.5%
HOLD
GOOGL $66M
4.1%
HOLD
TM $60M
3.7%
TRIM
MRK $56M
3.4%
TRIM
CVS $36M
2.2%
TRIM
SHW $35M
2.2%
HOLD
PG $34M
2.1%
TRIM
CMCSA $31M
1.9%
HOLD
RS $29M
1.8%
TRIM

QoQ vs previous quarter's share count · NEW = new position · ADD/TRIM = ±2% shares · HOLD = unchanged.

Listed as facts. See the verdict above before treating this as signal.

New positions in 2026 Q1

None.

Method & Limitations

Method: a "new position" = held this quarter, absent last quarter (options excluded; stocks with <50 prior holders excluded to filter spin-off artifacts). Entry 47 days after quarter-end — the first day the public could act on the filing. Benchmark = equal-weighted universe of all 13F-held stocks. Limitations: quarterly snapshots can't see intra-quarter trades; survivorship bias — funds that shut down are absent, which flatters the sample. Statistics, not advice.