XSIST Index Constituents

Stocks in the XSIST index with their weights, last prices and daily changes.

Constituents: 163; 8 ▲ · 154 ▼
Index return · 1D: −3.38%; today
Top 5 weight: 36.6%; THYAO · KCHOL · SAHOL · TCELL · ENKAI
Highest weight: THYAO; 13.02% of index

Period Returns

Day: −3.38%
Week: −7.64%
Month: −20.51%
YTD: −3.78%
1 year: 1.02%

Constituent Stocks

XSIST Index Constituents

THYAOTürk Hava Yollari	13.02%	288.00−0.95%	−0.95%	397.4B	3.53	0.39	6.96	1.03%
KCHOLKoç Holding	7.84%	212.50−1.85%	−1.85%	538.9B	14.16	0.68	22.15	3.68%
SAHOLSabanci Holding	6.14%	86.50−1.98%	−1.98%	181.7B	8.72	0.43	−3.97	1.55%
TCELLTurkcell	5.57%	97.80−2.15%	−2.15%	215.2B	10.25	0.70	3.10	1.87%
ENKAIEnka İnşaat	4.04%	85.70−0.87%	−0.87%	514.2B	13.18	1.25	10.18	2.20%
SISEŞişe Cam	3.82%	38.26−2.50%	−2.50%	117.2B	9.97	0.43	16.29	1.29%
CCOLACoca Cola Icecek	3.54%	77.15−0.96%	−0.96%	215.9B	9.77	2.35	6.18	1.63%
TAVHLTav Havalimanlari	3.09%	268.00−1.74%	−1.74%	97.4B	18.43	1.19	6.63	0.65%
AEFESAnadolu Efes	2.32%	18.10−3.88%	−3.88%	107.2B	10.70	0.85	3.86	0.83%
MPARKMlp Sağlık	2.22%	416.50−2.46%	−2.46%	79.6B	11.93	1.81	5.34	—
GUBRFGübre Fabrik.	2.18%	436.50−4.69%	−4.69%	145.8B	18.28	3.70	11.10	—
PGSUSPegasus	2.05%	143.10−2.45%	−2.45%	71.6B	—	0.63	8.69	—
AGHOLAnadolu Grubu Holding	1.83%	33.08−2.71%	−2.71%	80.6B	16.94	0.61	2.47	2.09%
ENERYEnerya Enerji	1.74%	12.54−7.18%	−7.18%	112.9B	20.11	1.73	15.25	0.19%
INVESInvestco Holding	1.72%	656.50−7.01%	−7.01%	123.1B	11.72	3.29	—	—
ENJSAEnerjisa Enerji	1.65%	106.10−1.12%	−1.12%	125.3B	18.25	1.15	4.61	4.15%
TEHOLTera Yatirim Tek. Hol.	1.42%	18.56−9.99%	−9.99%	37B	10.58	3.51	19.31	—
TKFENTekfen Holding	1.40%	271.25−2.25%	−2.25%	100.4B	—	2.63	35.73	0.47%
TRHOLTera Finansal Yat. Hol.	1.40%	1,746.00−10.00%	−10.00%	52.4B	11.23	11.07	−785.90	—
GLYHOGlobal Yat. Holding	1.34%	15.46−1.02%	−1.02%	30.1B	4.68	1.80	10.82	0.76%
IEYHOIsiklar Enerji Yapi Hol.	1.26%	89.30−9.98%	−9.98%	48.5B	—	23.53	−210.84	—
BRSANBorusan Boru Sanayi	1.24%	638.50−4.99%	−4.99%	90.5B	36.64	2.09	14.53	11.28%
DOHOLDogan Holding	1.23%	19.77−1.84%	−1.84%	51.7B	8.05	0.54	1.36	1.61%
AKSENAksa Enerji	1.20%	68.15−5.35%	−5.35%	83.6B	22.25	1.20	11.40	2.81%
AHGAZAhlatci Dogalgaz	1.12%	41.56−6.10%	−6.10%	108.1B	19.29	1.82	18.10	0.18%
TABGDTab Gida	1.12%	212.80−3.36%	−3.36%	55.6B	18.87	2.06	5.47	1.82%
AYGAZAygaz	1.02%	292.00−2.42%	−2.42%	64.2B	7.10	0.76	16.90	4.95%
ALARKAlarko Holding	0.98%	103.10−3.64%	−3.64%	43B	6.17	0.47	−62.76	3.39%
RYSASReysas Lojistik	0.95%	25.72−1.98%	−1.98%	51.4B	15.61	1.79	11.31	—
KUYASKuyas Yatirim	0.91%	33.10−9.96%	−9.96%	13.2B	—	6.40	110.32	—
DOASDogus Otomotiv	0.86%	151.20−2.20%	−2.20%	33.3B	13.53	0.45	5.40	8.33%
SELECSelcuk Ecza Deposu	0.76%	113.40−10.00%	−10.00%	70.4B	32.66	1.90	6.53	0.50%
ARCLKArçelik	0.68%	84.85−1.11%	−1.11%	57.3B	—	0.73	9.27	1.71%
BIGENBirlesim Grup Enerji	0.66%	60.95−9.97%	−9.97%	35.2B	—	9.83	56.39	—
YEOTKYeo Teknoloji Enerji	0.61%	29.14−6.60%	−6.60%	24.2B	9.56	4.38	6.31	—
ECILCEczacıbaşı İlaç	0.58%	64.00−6.57%	−6.57%	43.9B	—	0.64	154.32	2.04%
UFUKUfuk Yatirim	0.55%	541.50−9.98%	−9.98%	25.4B	500.01	8.84	—	—
ARDYZArd Bilişim Teknolojileri	0.55%	64.15−4.25%	−4.25%	20.7B	15.23	2.97	6.63	0.12%
DMRGDDmr Unlu Mamuller	0.51%	9.26−9.92%	−9.92%	13.7B	70.58	6.49	54.66	—
AKCNSAkcansa	0.50%	197.60−6.88%	−6.88%	37.8B	56.60	1.32	12.99	0.83%
ODINEOdine Teknoloji	0.45%	246.20−9.98%	−9.98%	27.2B	440.30	12.11	168.11	—
GRSELGur-Sel Turizm Taşımacılık	0.40%	261.00−3.78%	−3.78%	26.6B	7.26	1.91	6.60	0.23%
ECZYTEczacıbaşı Yatirim	0.36%	225.30−6.51%	−6.51%	23.7B	—	0.75	−476.87	1.56%
BRYATBorusan Yat. Paz.	0.36%	1,451.00−4.54%	−4.54%	40.8B	9.53	1.25	—	7.55%
FENERFenerbahce Futbol	0.34%	2.32−5.31%	−5.31%	14.5B	—	2.13	−6.81	—
INDESIndeks Bilgisayar	0.32%	10.30−2.92%	−2.92%	7.7B	8.05	0.90	1.59	1.95%
ORGEOrge Enerji Elektrik	0.31%	21.90−4.12%	−4.12%	8.8B	9.37	1.67	3.85	—
ALTNYAltinay Savunma	0.31%	12.37−5.43%	−5.43%	12.4B	248.50	2.29	24.34	—
GSRAYGalatasaray Sportif	0.30%	0.82−6.82%	−6.82%	11.1B	18.41	0.66	5.05	—
PATEKPasifik Teknoloji	0.30%	14.36−9.97%	−9.97%	9.7B	—	2.56	−20.46	—
ATATPAtp Yazilim	0.30%	232.30−4.83%	−4.83%	21.8B	9.16	3.33	5.34	0.40%
ORZAXOrzaks İlaç	0.27%	75.85−2.19%	−2.19%	25.7B	21.00	7.31	109.36	—
NTHOLNet Holding	0.27%	38.562.61%	2.61%	19.3B	15.65	0.21	3.17	—
CLEBICelebi	0.27%	1,358.00−3.00%	−3.00%	33B	9.59	4.70	6.75	5.11%
DOFRBDof Robotik	0.25%	80.50−4.73%	−4.73%	12.5B	41.03	5.35	34.47	—
HRKETHareket Proje Tasimaciligi	0.24%	7.77−5.59%	−5.59%	12.5B	—	1.57	12.36	—
KLRHOKiler Holding	0.24%	22.54−9.98%	−9.98%	36.6B	19.71	0.97	10.16	—
DAPGMDap Gayrimenkul	0.23%	3.61−9.98%	−9.98%	9.6B	11.51	0.54	1.82	—
ANELEAnel Elektrik	0.22%	55.90−9.98%	−9.98%	14.8B	—	21.03	−93.45	—
BINHO1000 Yatirimlar Hol.	0.22%	6.28−8.19%	−8.19%	8.1B	—	0.56	−48.44	—
VERUSVerusa Holding	0.21%	408.75−3.37%	−3.37%	28.6B	—	5.33	−605.97	0.09%
TRCASTurcas Holding	0.21%	44.24−2.77%	−2.77%	11.3B	9.76	0.67	—	4.89%
KLKIMKalekim Kimyevi Maddeler	0.21%	22.32−2.70%	−2.70%	10.3B	12.49	1.38	3.75	1.92%
LYDHOLydia Holding	0.19%	50.05−9.98%	−9.98%	17.6B	—	2.43	−73.69	6.74%
HUNERHun Yenilenebilir Enerji	0.19%	4.360.00%	0.00%	4.4B	—	0.86	12.73	—
GRTHOGrainturk Holding	0.19%	121.104.31%	4.31%	15.1B	7.53	1.40	22.32	0.19%
BJKASBesiktas Futbol Yat.	0.18%	1.62−5.26%	−5.26%	7.1B	—	1.92	−2.49	—
NTGAZNaturelgaz	0.18%	10.08−3.08%	−3.08%	7B	5.29	1.16	3.42	6.42%
KUVVAKuvva Gida	0.18%	100.80−9.92%	−9.92%	3.1B	—	6.53	13.76	—
HTTBTHitit Bilgisayar	0.17%	31.681.80%	1.80%	9.5B	22.66	2.71	11.61	—
TUREXTureks Turizm Taşımacılık	0.17%	5.66−5.67%	−5.67%	6.1B	9.93	0.68	2.65	—
HEDEFHedef Holding	0.16%	10.30−9.97%	−9.97%	30.9B	12.95	4.34	10.76	—
GSDHOGsd Holding	0.15%	4.06−3.10%	−3.10%	4.1B	12.62	0.28	−6.30	2.08%
POLTKPoliteknik Metal	0.15%	3,032.50−5.97%	−5.97%	11.4B	—	34.71	137.17	0.01%
IHLASIhlas Holding	0.14%	0.89−4.30%	−4.30%	2.7B	—	0.69	−1.10	—
METROMetro Holding	0.14%	6.51−4.69%	−4.69%	3.5B	—	0.70	—	—
MOBTLMobiltel İletişim	0.14%	10.07−5.45%	−5.45%	10.3B	12.27	1.10	13.37	—
EKIMEkim Turizm	0.13%	12.01−7.62%	−7.62%	10B	—	0.47	127.03	—
INTETIntetra Teknoloji	0.13%	50.75−0.59%	−0.59%	8.1B	—	—	—	—
ESCAREscar Filo	0.13%	17.90−9.96%	−9.96%	8.9B	—	1.36	23.75	0.62%
LINKLink Bilgisayar	0.13%	3.63−8.79%	−8.79%	3.2B	7.81	1.48	—	—
ESCOMEscort Teknoloji	0.13%	4.31−4.65%	−4.65%	3B	1.79	0.71	—	—
ADELAdel Kalemcilik	0.13%	24.70−6.72%	−6.72%	6.4B	—	4.66	45.84	1.75%
BOBETBogazici Beton Sanayi	0.12%	15.91−4.73%	−4.73%	6B	—	0.84	7.82	2.24%
KRONTKron Teknoloji	0.12%	18.16−6.97%	−6.97%	3.1B	21.43	3.35	14.88	—
EMPAEEmpa Elektronik	0.12%	46.12−7.72%	−7.72%	7.8B	112.86	4.07	17.47	0.09%
NETASNetas Telekom.	0.12%	74.65−5.51%	−5.51%	4.8B	—	−29.60	11.05	—
MCARDMetropal Kurumsal Hizmetler	0.11%	87.15−4.96%	−4.96%	8.1B	11.05	2.92	−57.61	2.70%
PRZMAPrizma Press Matbaacilik	0.10%	27.14−9.95%	−9.95%	2.1B	—	4.21	213.46	—
AKENRAkenerji	0.10%	8.30−5.68%	−5.68%	6.1B	—	0.38	50.62	—
PENTAPenta Teknoloji Ürünleri Dağıtım	0.10%	9.56−6.73%	−6.73%	3.8B	39.75	0.81	3.63	—
VBTYZVbt Yazilim	0.09%	25.50−8.21%	−8.21%	3B	15.44	2.56	4.74	—
IHAASIhlas Haber Ajansi	0.09%	23.16−9.95%	−9.95%	3.8B	—	12.38	−73.67	—
OZYSROzyasar Tel	0.09%	10.68−3.61%	−3.61%	4.5B	—	1.25	17.47	—
BRLSMBirlesim Mühendislik	0.09%	11.95−8.50%	−8.50%	2.7B	—	1.69	8.46	1.20%
PARSNParsan	0.09%	59.00−3.83%	−3.83%	5.1B	—	0.32	59.42	—
PCILTPc İletişim Medya	0.09%	30.720.07%	0.07%	3.6B	6.80	1.40	4.02	8.49%
BINBNBin Ulaşım Teknolojileri	0.09%	72.30−9.96%	−9.96%	8.1B	—	4.40	−24.71	—
ALBTNAlbayrak Beton Sanayi	0.09%	21.68−7.03%	−7.03%	5.4B	48.01	2.13	168.24	—
USHOLUs Yatirim Holding	0.09%	60.00−5.81%	−5.81%	1.3B	38.28	4.12	—	—
MERITMerit Turizm	0.09%	13.90−0.93%	−0.93%	4.7B	5.55	0.23	—	1.13%
KRVGDKervan Gida	0.08%	2.05−3.76%	−3.76%	4.4B	6.49	0.54	6.40	1.23%
TGSASTgs Dış Ticaret	0.08%	96.30−10.00%	−10.00%	1.4B	20.41	3.54	9.32	0.16%
BESTEBest Brands Enerji	0.08%	20.38−9.98%	−9.98%	3.8B	11.52	0.76	19.43	—
TUCLKTugcelik	0.08%	4.20−3.89%	−3.89%	1.5B	—	0.38	5.81	—
HOROZHoroz Lojistik	0.08%	44.70−6.29%	−6.29%	4B	—	0.91	4.99	—
INVEOInveo Yatirim Holding	0.08%	5.85−4.26%	−4.26%	5.8B	—	0.46	−1.66	—
BIGCHBuyuk Sefler Bigchefs	0.07%	3.64−6.43%	−6.43%	1.9B	82.16	1.38	2.37	2.10%
UCAYMUcay Mühendislik	0.07%	15.48−8.94%	−8.94%	3.5B	24.91	1.58	4.74	—
ETILREtiler Gida	0.07%	7.034.46%	4.46%	1.8B	—	3.46	9.15	—
LIDERLdr Turizm	0.07%	8.41−9.96%	−9.96%	6.9B	11.16	0.63	−5.92	0.16%
BIGTKBig Medya Teknoloji	0.06%	119.00−9.98%	−9.98%	4B	536.69	2.67	20.49	—
ALCARAlarko Carrier	0.06%	617.00−4.19%	−4.19%	6.7B	—	3.25	−36.59	4.92%
EDIPEdip Gayrimenkul	0.06%	29.88−6.04%	−6.04%	1.9B	5.91	0.24	8.18	—
DENGEDenge Holding	0.06%	1.73−6.49%	−6.49%	1B	—	0.68	−23.53	—
DUNYHDunya Holding	0.06%	40.12−9.96%	−9.96%	1.5B	2.54	0.85	—	0.15%
GLRYHGuler Yat. Holding	0.06%	1.75−3.85%	−3.85%	1.1B	2.23	0.18	3.19	—
KFEINKafein Yazilim	0.06%	5.86−6.54%	−6.54%	1.2B	36.40	0.82	3.99	0.23%
KRPLSKoroplast Temizlik Ambalaj	0.06%	11.29−4.32%	−4.32%	2B	—	1.84	5.12	0.70%
DERHLDerluks Yatirim Holding	0.06%	1.611.26%	1.26%	1.6B	—	0.80	4.58	—
AZTEKAztek Teknoloji	0.06%	3.21−6.96%	−6.96%	3.2B	—	1.72	23.78	—
UNLUUnlu Yatirim Holding	0.06%	14.292.29%	2.29%	2.5B	—	0.83	−1.97	3.58%
FLAPFlap Kongre Toplanti Hiz.	0.06%	12.613.36%	3.36%	1.2B	—	1.06	−334.27	0.70%
MTRKSMatriks Finansal Teknolojiler	0.05%	20.62−6.78%	−6.78%	2.1B	6.60	1.66	8.22	0.83%
INGRMIngram Bilişim	0.05%	304.50−3.41%	−3.41%	7.3B	8,440.28	3.40	14.87	1.95%
DURDODuran Dogan Basim	0.05%	4.55−3.19%	−3.19%	2.3B	—	1.35	10.62	—
BORLSBorlease Otomotiv	0.05%	1.72−9.95%	−9.95%	1.2B	—	−0.95	7.04	—
TURGGTurker Proje Gayrimenkul	0.05%	23.68−5.96%	−5.96%	3B	10.61	1.14	−142.01	—
PLTURPlatform Turizm	0.05%	15.20−7.43%	−7.43%	3.7B	6.13	0.37	2.48	2.91%
ARENAArena Bilgisayar	0.05%	14.74−5.75%	−5.75%	1.5B	23.65	0.78	—	0.77%
SOHOESoho Giyim ve Enerji	0.05%	7.37−6.59%	−6.59%	2.3B	64.90	0.86	46.67	—
DGATEDatagate Bilgisayar	0.05%	62.20−8.53%	−8.53%	1.9B	14.72	4.28	1.80	7.45%
GOODYGood-Year	0.05%	2.13−3.62%	−3.62%	3.2B	—	1.97	35.87	—
MACKOMackolik Internet Hizmetleri	0.05%	25.06−6.84%	−6.84%	2.5B	9.07	4.88	5.32	6.24%
HURGZHurriyet Gzt.	0.05%	5.43−9.50%	−9.50%	3.2B	—	1.71	−3.86	—
PKARTPlastikkart	0.05%	85.70−3.55%	−3.55%	1.9B	16.75	3.22	—	3.12%
AVHOLAvrupa Yatirim Holding	0.04%	24.56−5.90%	−5.90%	914.9M	—	0.76	−7.53	—
CONSEConsus Enerji	0.04%	1.61−6.94%	−6.94%	1.2B	15.88	0.58	22.49	—
SANELSanel Mühendislik	0.04%	37.80−6.11%	−6.11%	690.1M	3.37	2.66	5.27	—
KNFRTKonfrut Tarim	0.04%	10.44−2.16%	−2.16%	2.8B	—	1.72	15.98	—
DCTTRDct Trading Dış Ticaret	0.04%	3.38−7.40%	−7.40%	1.3B	—	1.24	−15.98	—
INTEMIntema	0.03%	198.60−6.59%	−6.59%	3.9B	81.56	3.61	10.54	—
OTTOOtto Holding	0.03%	87.40−7.81%	−7.81%	667.3M	—	1.00	−20.98	—
YESILYesil Yatirim Holding	0.03%	0.83−7.78%	−7.78%	535.3M	—	0.38	—	—
GSDDEGsd Denizcilik	0.03%	11.64−6.73%	−6.73%	1.7B	3.05	0.51	2.41	—
ANGENAnatolia Tani ve Biyoteknoloji	0.03%	6.79−4.23%	−4.23%	1.5B	—	0.82	38.11	—
SMARTSmartiks Yazilim	0.03%	16.02−7.24%	−7.24%	510.4M	—	0.99	8.90	—
IHGZTIhlas Gazetecilik	0.03%	0.98−3.92%	−3.92%	784M	3.09	0.17	−69.47	—
YKSLNYukselen Çelik	0.03%	2.24−9.68%	−9.68%	1.1B	—	1.12	4.64	—
IHEVAIhlas Ev Aletleri	0.03%	1.64−2.96%	−2.96%	574.8M	7.15	0.24	2.75	0.89%
ARZUMArzum Ev Aletleri	0.03%	1.16−6.45%	−6.45%	696M	—	−1.33	−6.28	—
CEOEMCeo Event Medya	0.03%	19.64−2.96%	−2.96%	864.2M	11.80	1.55	3.71	4.16%
DERIMDerimod	0.03%	26.60−4.93%	−4.93%	1.4B	11.94	1.84	—	—
IZINVIz Yatirim Holding	0.03%	31.46−6.81%	−6.81%	550.9M	—	1.44	90.04	—
COSMOCosmos Yat. Holding	0.03%	80.20−9.53%	−9.53%	554.8M	—	3.90	8.78	—
OBASEObase Bilgisayar	0.03%	24.82−9.35%	−9.35%	1.1B	—	1.39	6.54	—
DESPCDespec Bilgisayar	0.02%	30.16−6.39%	−6.39%	693.7M	—	1.66	1.97	19.84%
IHYAYIhlas Yayin Holding	0.02%	1.04−0.95%	−0.95%	468M	—	0.85	−2.95	—
CUSANCuhadaroglu Metal	0.02%	18.71−3.06%	−3.06%	1.3B	—	1.71	−35.06	4.42%
SKYLPSkyalp Finansal Teknolojiler	0.02%	61.30−9.99%	−9.99%	582.3M	—	2.26	54.84	—
AVTURAvrasya Petrol ve Tur.	0.02%	9.63−6.23%	−6.23%	433.4M	104.06	0.33	—	—
AKYHOAkdeniz Yatirim Holding	0.02%	1.62−3.57%	−3.57%	402.1M	—	0.58	29.88	—
RODRGRodrigo Tekstil	0.02%	16.92−6.00%	−6.00%	479.5M	26.63	6.32	−103.04	—

Ratios are calculated from the latest published financial statements.50 / 163

Other Indices

About the XSIST Index

The XSIST (XSIST) index has 163 constituents. The five heaviest weights are THYAO (13.02%), KCHOL (7.84%), SAHOL (6.14%), TCELL (5.57%), ENKAI (4.04%), which together make up 36.6% of the index. As of Sep 28, 2026, 15:51, 8 constituents are up and 154 are down; the index has returned −3.38% today and −3.78% year to date.

Frequently Asked Questions

Which stocks are in the XSIST index?

The XSIST index has 163 constituents: THYAO, KCHOL, SAHOL, TCELL, ENKAI, SISE, CCOLA, TAVHL, AEFES, MPARK, GUBRF, PGSUS, AGHOL, ENERY, INVES, ENJSA, TEHOL, TKFEN, TRHOL, GLYHO, IEYHO, BRSAN, DOHOL, AKSEN, AHGAZ, TABGD, AYGAZ, ALARK, RYSAS, KUYAS, DOAS, SELEC, ARCLK, BIGEN, YEOTK, ECILC, UFUK, ARDYZ, DMRGD, AKCNS, ODINE, GRSEL, ECZYT, BRYAT, FENER, INDES, ORGE, ALTNY, GSRAY, PATEK, ATATP, ORZAX, NTHOL, CLEBI, DOFRB, HRKET, KLRHO, DAPGM, ANELE, BINHO, VERUS, TRCAS, KLKIM, LYDHO, HUNER, GRTHO, BJKAS, NTGAZ, KUVVA, HTTBT, TUREX, HEDEF, GSDHO, POLTK, IHLAS, METRO, MOBTL, EKIM, INTET, ESCAR, LINK, ESCOM, ADEL, BOBET, KRONT, EMPAE, NETAS, MCARD, PRZMA, AKENR, PENTA, VBTYZ, IHAAS, OZYSR, BRLSM, PARSN, PCILT, BINBN, ALBTN, USHOL, MERIT, KRVGD, TGSAS, BESTE, TUCLK, HOROZ, INVEO, BIGCH, UCAYM, ETILR, LIDER, BIGTK, ALCAR, EDIP, DENGE, DUNYH, GLRYH, KFEIN, KRPLS, DERHL, AZTEK, UNLU, FLAP, MTRKS, INGRM, DURDO, BORLS, TURGG, PLTUR, ARENA, SOHOE, DGATE, GOODY, MACKO, HURGZ, PKART, AVHOL, CONSE, SANEL, KNFRT, DCTTR, INTEM, OTTO, YESIL, GSDDE, ANGEN, SMART, IHGZT, YKSLN, IHEVA, ARZUM, CEOEM, DERIM, IZINV, COSMO, OBASE, DESPC, IHYAY, CUSAN, SKYLP, AVTUR, AKYHO, RODRG.

Which stock has the highest weight in the XSIST index?

THYAO is the largest constituent with a weight of 13.02%, followed by KCHOL (7.84%) and SAHOL (6.14%).

Is THYAO in the XSIST index?

Yes. THYAO is a constituent of the XSIST index with a weight of 13.02%. You can see any stock’s index memberships in the Index Memberships section of its stock page.

How are index weights determined?

In Borsa Istanbul indices each stock is weighted by its free-float market cap, with a cap on any single stock set by the index rules. Weights move intraday with prices.